General Knowledge for Competitive Exam Success

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Q. A student receives an award of $1200, which is 30% of the total amount allocated for awards. What is the total amount allocated? (2021)

A. $3000
B. $4000
C. $5000
D. $6000

Solution

Let total amount be x. Then, 0.3x = 1200. Therefore, x = 1200 / 0.3 = $4000.

Correct Answer: B — $4000

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Q. A student receives an award of $1200, which is 30% of the total amount awarded. What is the total amount awarded? (2021)

A. $3000
B. $3600
C. $4000
D. $4200

Solution

Let the total amount be x. Then, 0.3x = 1200. Therefore, x = 1200 / 0.3 = $4000.

Correct Answer: B — $3600

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Q. A student scored 150 out of 200 in an exam. What is the ratio of the score to the total marks? (2023)

A. 3:4
B. 4:5
C. 5:6
D. 6:7

Solution

Ratio = Score : Total Marks = 150 : 200 = 3 : 4.

Correct Answer: B — 4:5

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Q. A student scored 85 marks in an exam of 200 marks. What is the percentage of marks? (2021)

A. 40%
B. 42.5%
C. 45%
D. 50%

Solution

Percentage = (85 / 200) * 100 = 42.5%.

Correct Answer: B — 42.5%

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Q. A student scored 85 marks out of 100 and received a merit award. What percentage of marks did the student score?

A. 80%
B. 85%
C. 90%
D. 75%

Solution

Percentage = (85/100) * 100% = 85%.

Correct Answer: B — 85%

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Q. A student scored 92 marks out of 100 and received a certificate of excellence. If the passing marks are 40, what is the percentage of marks obtained by the student? (2022)

A. 90%
B. 92%
C. 95%
D. 85%

Solution

Percentage = (92 / 100) * 100 = 92%.

Correct Answer: B — 92%

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Q. A student wins a $1200 award and decides to donate 25% of it to charity. How much does the student donate? (2020)

A. $300
B. $250
C. $200
D. $350

Solution

Amount donated = 25/100 * 1200 = $300.

Correct Answer: A — $300

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Q. A student wins a competition and receives a cash prize of $800. If he donates 10% of it to charity, how much does he keep?

A. $720
B. $740
C. $760
D. $780

Solution

Donation = 10% of $800 = $80. Amount kept = $800 - $80 = $720.

Correct Answer: A — $720

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Q. A student wins a competition and receives a gift card worth $150. If he uses 2/3 of it, how much is left on the card?

A. $50
B. $100
C. $75
D. $25

Solution

Amount used = (2/3) * 150 = $100. Amount left = $150 - $100 = $50.

Correct Answer: C — $75

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Q. A student wins a competition and receives a gift card worth $150. If he uses 60% of it, how much is left on the gift card?

A. $60
B. $90
C. $75
D. $100

Solution

Amount used = 60% of $150 = $90. Amount left = $150 - $90 = $60.

Correct Answer: B — $90

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Q. A student wins a grant of $2500 and decides to save 25% of it. How much does he save? (2022)

A. $500
B. $600
C. $700
D. $800

Solution

Amount saved = 0.25 * 2500 = $625.

Correct Answer: A — $500

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Q. A student wins a grant of $2500 and spends 25% on books. How much does he spend on books? (2022)

A. $500
B. $600
C. $700
D. $800

Solution

Amount spent on books = 25% of 2500 = 0.25 * 2500 = $625.

Correct Answer: A — $500

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Q. A student won a medal worth $300. If the medal's value increases by 25%, what will be its new value?

A. $350
B. $375
C. $400
D. $450

Solution

New value = $300 + (25/100 * 300) = $300 + $75 = $375.

Correct Answer: B — $375

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Q. A student won a medal worth $3000. If the medal's value increases by 15% after a year, what will be its new value?

A. $3450
B. $3600
C. $3300
D. $3150

Solution

New value = $3000 + (15/100 * 3000) = $3000 + $450 = $3450.

Correct Answer: A — $3450

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Q. A student won a scholarship of $2500. If he donates 10% of it to charity, how much does he donate?

A. $200
B. $250
C. $300
D. $350

Solution

Amount donated = 10% of 2500 = 0.1 * 2500 = $250.

Correct Answer: B — $250

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Q. A student won an award worth $5000. If he spends 20% of it on books, how much money does he have left?

A. $4000
B. $4500
C. $3500
D. $3000

Solution

Amount spent on books = 20% of 5000 = 0.2 * 5000 = $1000. Amount left = 5000 - 1000 = $4000.

Correct Answer: B — $4500

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Q. A subsidy scheme allocates ₹1,00,000 for 4 projects. If one project receives ₹30,000, what percentage of the total budget does this project consume?

A. 20%
B. 25%
C. 30%
D. 35%

Solution

Percentage consumed = (₹30,000 / ₹1,00,000) * 100 = 30%.

Correct Answer: C — 30%

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Q. A swimmer completes a lap in 30 seconds. How many laps can he complete in 10 minutes? (2021)

A. 20
B. 15
C. 25
D. 30

Solution

10 minutes = 600 seconds. Laps completed = 600 seconds / 30 seconds per lap = 20 laps.

Correct Answer: A — 20

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Q. A swimmer swims 200 meters in 2 minutes. What is his average speed in meters per second? (2021)

A. 1.5 m/s
B. 2 m/s
C. 2.5 m/s
D. 3 m/s

Solution

Average speed = Distance / Time = 200 meters / 120 seconds = 1.67 m/s, which rounds to 2 m/s.

Correct Answer: B — 2 m/s

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Q. A swimmer swims 200 meters in 2 minutes. What is his speed in kilometers per hour? (2021)

A. 6 km/h
B. 5 km/h
C. 4 km/h
D. 3 km/h

Solution

Speed = Distance / Time = 200 meters / 120 seconds = 1.67 m/s. To convert to km/h, multiply by 3.6: 1.67 * 3.6 = 6 km/h.

Correct Answer: A — 6 km/h

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Q. A swimmer swims 200 meters in 2 minutes. What is his speed in meters per second? (2021)

A. 1.5 m/s
B. 2 m/s
C. 2.5 m/s
D. 3 m/s

Solution

Speed = Distance/Time = 200 m / 120 s = 1.67 m/s, which rounds to 2 m/s.

Correct Answer: B — 2 m/s

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Q. A tank can be filled by a pipe in 6 hours and emptied by another pipe in 8 hours. If both pipes are opened together, how long will it take to fill the tank? (2020)

A. 12 hours
B. 24 hours
C. 48 hours
D. 18 hours

Solution

Rate of filling = 1/6 tank/hour, Rate of emptying = 1/8 tank/hour. Combined rate = 1/6 - 1/8 = 1/24 tank/hour. Time = 1 / (1/24) = 24 hours.

Correct Answer: A — 12 hours

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Q. A tank can be filled by two pipes in 12 hours and 15 hours respectively. How long will it take to fill the tank if both pipes are opened together? (2021)

A. 7 hours
B. 8 hours
C. 9 hours
D. 10 hours

Solution

Rate of first pipe = 1/12, Rate of second pipe = 1/15. Combined rate = 1/12 + 1/15 = 1/7.2. Time = 7.2 hours.

Correct Answer: C — 9 hours

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Q. A tank can fire 10 rounds per minute. How many rounds will it fire in 15 minutes? (2022)

A. 100
B. 120
C. 150
D. 180

Solution

Total Rounds = Rate × Time = 10 rounds/min × 15 min = 150 rounds

Correct Answer: C — 150

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Q. A tank can hold 500 liters of water. If it is filled at a rate of 25 liters per minute, how long will it take to fill the tank? (2020)

A. 15 min
B. 20 min
C. 25 min
D. 30 min

Solution

Time = Total Volume / Rate = 500 liters / 25 liters/min = 20 min

Correct Answer: D — 30 min

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Q. A team wins 70% of its matches. If they played 40 matches, how many matches did they win? (2023)

A. 28
B. 30
C. 32
D. 35

Solution

Matches won = 70% of 40 = 0.7 * 40 = 28.

Correct Answer: A — 28

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Q. A tennis player serves at a speed of 180 km/h. How long will it take for the ball to travel 20 meters? (2021)

A. 0.4 seconds
B. 0.5 seconds
C. 0.6 seconds
D. 0.7 seconds

Solution

Speed in m/s = 180 km/h * (1000 m / 1 km) * (1 h / 3600 s) = 50 m/s. Time = distance/speed = 20 m / 50 m/s = 0.4 seconds.

Correct Answer: B — 0.5 seconds

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Q. A tennis player serves at a speed of 180 km/h. What is this speed in meters per second? (2023)

A. 50 m/s
B. 40 m/s
C. 30 m/s
D. 20 m/s

Solution

To convert km/h to m/s, divide by 3.6. So, 180 km/h = 180 / 3.6 = 50 m/s.

Correct Answer: B — 40 m/s

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Q. A tennis player serves the ball at a speed of 180 km/h. How many meters per second is this? (2022)

A. 50
B. 45
C. 60
D. 40

Solution

To convert km/h to m/s, divide by 3.6. 180 km/h ÷ 3.6 = 50 m/s.

Correct Answer: B — 45

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Q. A tennis player serves the ball at a speed of 180 km/h. What is the speed in meters per second? (2022)

A. 50 m/s
B. 45 m/s
C. 40 m/s
D. 60 m/s

Solution

Speed in m/s = 180 km/h × (1000 m / 1 km) × (1 h / 3600 s) = 50 m/s.

Correct Answer: B — 45 m/s

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General Knowledge

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