Q. A boat goes downstream at a speed of 20 km/h and upstream at 10 km/h. What is the speed of the boat in still water? (2022)
A.
15 km/h
B.
20 km/h
C.
25 km/h
D.
30 km/h
Show solution
Solution
Speed in still water = (Downstream speed + Upstream speed) / 2 = (20 + 10) / 2 = 15 km/h.
Correct Answer:
A
— 15 km/h
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Q. A bus travels 120 km at a speed of 60 km/h and returns at a speed of 40 km/h. What is the average speed for the entire trip? (2023)
A.
48 km/h
B.
50 km/h
C.
52 km/h
D.
54 km/h
Show solution
Solution
Time for first part = 120/60 = 2 hours. Time for return = 120/40 = 3 hours. Total time = 2 + 3 = 5 hours. Average speed = Total distance / Total time = 240 km / 5 hours = 48 km/h.
Correct Answer:
A
— 48 km/h
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Q. A bus travels 120 km in 2 hours and then 180 km in 3 hours. What is the average speed of the bus? (2023)
A.
60 km/h
B.
70 km/h
C.
75 km/h
D.
80 km/h
Show solution
Solution
Total distance = 120 + 180 = 300 km. Total time = 2 + 3 = 5 hours. Average speed = 300 km / 5 hours = 60 km/h.
Correct Answer:
C
— 75 km/h
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Q. A bus travels from city A to city B, a distance of 120 km, at a speed of 60 km/h. How long does it take to reach city B? (2023)
A.
1 hour
B.
1.5 hours
C.
2 hours
D.
2.5 hours
Show solution
Solution
Time = Distance / Speed = 120 km / 60 km/h = 2 hours.
Correct Answer:
C
— 2 hours
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Q. A bus travels from city A to city B, a distance of 120 km, at a speed of 60 km/h. How long does the journey take? (2023)
A.
1 hour
B.
1.5 hours
C.
2 hours
D.
2.5 hours
Show solution
Solution
Time = Distance / Speed = 120 km / 60 km/h = 2 hours.
Correct Answer:
C
— 2 hours
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Q. A car covers a distance of 150 km in 3 hours. What is its speed in km/h? (2023)
A.
45 km/h
B.
50 km/h
C.
55 km/h
D.
60 km/h
Show solution
Solution
Speed = Distance / Time = 150 km / 3 h = 50 km/h.
Correct Answer:
B
— 50 km/h
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Q. A car travels 100 km in 1.5 hours. What is its average speed? (2019)
A.
60 km/h
B.
65 km/h
C.
70 km/h
D.
75 km/h
Show solution
Solution
Average speed = Distance / Time = 100 km / 1.5 hours = 66.67 km/h, which rounds to 60 km/h.
Correct Answer:
A
— 60 km/h
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Q. A car travels 150 km in 2 hours and then 100 km in 1 hour. What is the average speed of the car? (2022)
A.
75 km/h
B.
80 km/h
C.
85 km/h
D.
90 km/h
Show solution
Solution
Total distance = 150 km + 100 km = 250 km. Total time = 2 hours + 1 hour = 3 hours. Average speed = Total distance / Total time = 250 km / 3 hours = 83.33 km/h, which rounds to 80 km/h.
Correct Answer:
B
— 80 km/h
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Q. A car travels 150 km in 2 hours and then 100 km in 1 hour. What is the average speed of the car for the entire trip? (2020)
A.
75 km/h
B.
80 km/h
C.
85 km/h
D.
90 km/h
Show solution
Solution
Total distance = 150 + 100 = 250 km. Total time = 2 + 1 = 3 hours. Average speed = Total distance / Total time = 250 km / 3 hours = 83.33 km/h, which rounds to 80 km/h.
Correct Answer:
B
— 80 km/h
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Q. A car travels 150 km in 2.5 hours. What is its speed in km/h? (2020)
A.
55 km/h
B.
60 km/h
C.
65 km/h
D.
70 km/h
Show solution
Solution
Speed = Distance / Time = 150 km / 2.5 hours = 60 km/h.
Correct Answer:
B
— 60 km/h
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Q. A cyclist travels 15 km in 30 minutes. What is the speed of the cyclist in km/h? (2019)
A.
25 km/h
B.
30 km/h
C.
35 km/h
D.
40 km/h
Show solution
Solution
Speed = Distance / Time = 15 km / 0.5 hours = 30 km/h.
Correct Answer:
A
— 25 km/h
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Q. A motorbike covers a distance of 180 km in 3 hours. What is its speed? (2023)
A.
55 km/h
B.
60 km/h
C.
65 km/h
D.
70 km/h
Show solution
Solution
Speed = Distance / Time = 180 km / 3 hours = 60 km/h.
Correct Answer:
B
— 60 km/h
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Q. A number is increased by 20% and then decreased by 20%. What is the net change in percentage? (2023)
Show solution
Solution
Let the number be 100. After increase: 100 + 20% of 100 = 120. After decrease: 120 - 20% of 120 = 96. Net change = (96 - 100)/100 * 100% = -4%.
Correct Answer:
B
— 4%
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Q. A person cycles at a speed of 12 km/h for 1.5 hours. How far does he travel? (2019)
A.
15 km
B.
16 km
C.
18 km
D.
20 km
Show solution
Solution
Distance = Speed × Time = 12 km/h × 1.5 hours = 18 km.
Correct Answer:
C
— 18 km
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Q. A person drives 150 km in 2.5 hours. What is his average speed? (2019)
A.
55 km/h
B.
60 km/h
C.
65 km/h
D.
70 km/h
Show solution
Solution
Average speed = Total distance / Total time = 150 km / 2.5 hours = 60 km/h.
Correct Answer:
B
— 60 km/h
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Q. A person drives 180 km at a speed of 90 km/h. How long does the journey take? (2021)
A.
1 hour
B.
1.5 hours
C.
2 hours
D.
2.5 hours
Show solution
Solution
Time = Distance / Speed = 180 km / 90 km/h = 2 hours.
Correct Answer:
C
— 2 hours
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Q. A person jogs at a speed of 8 km/h for 1.5 hours. How far does he jog? (2019)
A.
10 km
B.
12 km
C.
14 km
D.
15 km
Show solution
Solution
Distance = Speed * Time = 8 km/h * 1.5 hours = 12 km.
Correct Answer:
B
— 12 km
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Q. A person jogs at a speed of 8 km/h for 45 minutes. How far does he jog? (2022)
A.
5 km
B.
6 km
C.
7 km
D.
8 km
Show solution
Solution
Time = 45 minutes = 0.75 hours. Distance = Speed * Time = 8 km/h * 0.75 hours = 6 km.
Correct Answer:
B
— 6 km
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Q. A person walks 3 km in 36 minutes. What is his speed in km/h? (2023)
A.
4 km/h
B.
5 km/h
C.
6 km/h
D.
7 km/h
Show solution
Solution
Speed = Distance / Time = 3 km / (36/60) hours = 3 / 0.6 = 5 km/h.
Correct Answer:
B
— 5 km/h
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Q. A person walks 4 km in 1 hour and then runs 8 km in 30 minutes. What is the average speed for the entire journey? (2023)
A.
8 km/h
B.
10 km/h
C.
12 km/h
D.
14 km/h
Show solution
Solution
Total distance = 4 km + 8 km = 12 km. Total time = 1 hour + 0.5 hours = 1.5 hours. Average speed = Total distance / Total time = 12 km / 1.5 hours = 8 km/h.
Correct Answer:
B
— 10 km/h
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Q. A person walks 4 km in 50 minutes. What is his speed in km/h? (2022)
A.
4.8 km/h
B.
5 km/h
C.
5.2 km/h
D.
6 km/h
Show solution
Solution
Speed = Distance / Time = 4 km / (50/60) hours = 4 km / (5/6) hours = 4 * (6/5) = 4.8 km/h.
Correct Answer:
A
— 4.8 km/h
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Q. A person walks 4 km in 50 minutes. What is his speed in m/s? (2022)
A.
1.2 m/s
B.
1.5 m/s
C.
2.0 m/s
D.
2.5 m/s
Show solution
Solution
Speed = Distance / Time = 4 km = 4000 m; Time = 50 minutes = 3000 seconds. Speed = 4000 m / 3000 s = 1.33 m/s, which rounds to 1.5 m/s.
Correct Answer:
B
— 1.5 m/s
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Q. A person walks 5 km in 1 hour and then runs 10 km in 1 hour. What is the average speed for the entire journey? (2022)
A.
7.5 km/h
B.
8 km/h
C.
8.5 km/h
D.
9 km/h
Show solution
Solution
Total distance = 5 km + 10 km = 15 km. Total time = 1 hour + 1 hour = 2 hours. Average speed = Total distance / Total time = 15 km / 2 hours = 7.5 km/h.
Correct Answer:
A
— 7.5 km/h
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Q. A runner completes a 5 km race in 25 minutes. What is his speed in km/h? (2023)
A.
10 km/h
B.
12 km/h
C.
14 km/h
D.
15 km/h
Show solution
Solution
Speed = Distance / Time = 5 km / (25/60) hours = 5 / (5/12) = 12 km/h.
Correct Answer:
A
— 10 km/h
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Q. A train covers a distance of 300 km in 4 hours. What is its average speed? (2020)
A.
60 km/h
B.
70 km/h
C.
75 km/h
D.
80 km/h
Show solution
Solution
Average speed = Total distance / Total time = 300 km / 4 hours = 75 km/h.
Correct Answer:
A
— 60 km/h
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Q. A train covers a distance of 300 km in 4 hours. What is its speed in km/h? (2020)
A.
70 km/h
B.
75 km/h
C.
80 km/h
D.
85 km/h
Show solution
Solution
Speed = Distance / Time = 300 km / 4 hours = 75 km/h.
Correct Answer:
C
— 80 km/h
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Q. A train travels 150 km at a speed of 75 km/h. How long does it take to complete the journey? (2020)
A.
1.5 hours
B.
2 hours
C.
2.5 hours
D.
3 hours
Show solution
Solution
Time = Distance / Speed = 150 km / 75 km/h = 2 hours.
Correct Answer:
A
— 1.5 hours
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Q. A train travels 60 km at a speed of 30 km/h and then 90 km at a speed of 60 km/h. What is the average speed of the train for the entire journey? (2021)
A.
40 km/h
B.
45 km/h
C.
50 km/h
D.
55 km/h
Show solution
Solution
Total distance = 60 + 90 = 150 km. Time for first part = 60/30 = 2 hours. Time for second part = 90/60 = 1.5 hours. Total time = 2 + 1.5 = 3.5 hours. Average speed = Total distance / Total time = 150 / 3.5 = 42.86 km/h, which rounds to 45 km/h.
Correct Answer:
B
— 45 km/h
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Q. If a car covers a distance of 240 km in 3 hours, what is its speed in km/h? (2020)
A.
70 km/h
B.
80 km/h
C.
90 km/h
D.
100 km/h
Show solution
Solution
Speed = Distance / Time = 240 km / 3 hours = 80 km/h.
Correct Answer:
B
— 80 km/h
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Q. If a car travels 150 km in 2 hours and 30 minutes, what is its average speed? (2022)
A.
55 km/h
B.
60 km/h
C.
65 km/h
D.
70 km/h
Show solution
Solution
Total time = 2.5 hours. Average speed = Distance / Time = 150 km / 2.5 hours = 60 km/h.
Correct Answer:
B
— 60 km/h
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