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)
Practice Questions
1 question
Q1
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)
75 km/h
80 km/h
85 km/h
90 km/h
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.
Questions & Step-by-step Solutions
1 item
Q
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)
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.
Steps: 5
Step 1: Calculate the total distance traveled by the car. Add the two distances together: 150 km + 100 km.
Step 2: Calculate the total time taken for the trip. Add the two time periods together: 2 hours + 1 hour.
Step 3: Use the total distance and total time to find the average speed. The formula is: Average Speed = Total Distance / Total Time.
Step 4: Plug in the numbers: Average Speed = 250 km / 3 hours.
Step 5: Calculate the average speed to get the final answer.
