Basic Maths and Reasoning MCQs (page 114 of 212)
Percentages, ratios, averages, profit and loss, speed and time, number series and simple logical reasoning, with the working shown for every answer.
4,221 questions. Select an option to check your answer, or open "Show answer". Showing 2261–2280.
- 2261.
A train 240 m long runs at 72 km/h. How long does it take to pass a pole?
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Answer: C. 12 seconds
72 km/h = 20 m/s. Time = length ÷ speed = 240 ÷ 20 = 12 seconds.
- 2262.
A train 300 m long runs at 108 km/h. How long does it take to pass a pole?
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Answer: A. 10 seconds
108 km/h = 30 m/s. Time = length ÷ speed = 300 ÷ 30 = 10 seconds.
- 2263.
A train 180 m long runs at 72 km/h. How long does it take to pass a pole?
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Answer: C. 9 seconds
72 km/h = 20 m/s. Time = length ÷ speed = 180 ÷ 20 = 9 seconds.
- 2264.
A train 200 m long runs at 90 km/h. How long does it take to pass a pole?
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Answer: B. 8 seconds
90 km/h = 25 m/s. Time = length ÷ speed = 200 ÷ 25 = 8 seconds.
- 2265.
A train 200 m long runs at 90 km/h. How long does it take to pass a pole?
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Answer: D. 8 seconds
90 km/h = 25 m/s. Time = length ÷ speed = 200 ÷ 25 = 8 seconds.
- 2266.
A train 460 m long runs at 72 km/h. How long does it take to pass a pole?
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Answer: A. 23 seconds
72 km/h = 20 m/s. Time = length ÷ speed = 460 ÷ 20 = 23 seconds.
- 2267.
A train 380 m long runs at 36 km/h. How long does it take to pass a pole?
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Answer: C. 38 seconds
36 km/h = 10 m/s. Time = length ÷ speed = 380 ÷ 10 = 38 seconds.
- 2268.
A train 380 m long runs at 72 km/h. How long does it take to pass a pole?
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Answer: C. 19 seconds
72 km/h = 20 m/s. Time = length ÷ speed = 380 ÷ 20 = 19 seconds.
- 2269.
A train 380 m long runs at 36 km/h. How long does it take to pass a pole?
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Answer: B. 38 seconds
36 km/h = 10 m/s. Time = length ÷ speed = 380 ÷ 10 = 38 seconds.
- 2270.
A train 340 m long runs at 72 km/h. How long does it take to pass a pole?
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Answer: C. 17 seconds
72 km/h = 20 m/s. Time = length ÷ speed = 340 ÷ 20 = 17 seconds.
- 2271.
A train 320 m long runs at 72 km/h. How long does it take to pass a pole?
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Answer: B. 16 seconds
72 km/h = 20 m/s. Time = length ÷ speed = 320 ÷ 20 = 16 seconds.
- 2272.
A train 300 m long runs at 36 km/h. How long does it take to pass a pole?
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Answer: B. 30 seconds
36 km/h = 10 m/s. Time = length ÷ speed = 300 ÷ 10 = 30 seconds.
- 2273.
A train 120 m long runs at 108 km/h. How long does it take to pass a pole?
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Answer: B. 4 seconds
108 km/h = 30 m/s. Time = length ÷ speed = 120 ÷ 30 = 4 seconds.
- 2274.
A train 240 m long runs at 54 km/h. How long does it take to pass a pole?
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Answer: C. 16 seconds
54 km/h = 15 m/s. Time = length ÷ speed = 240 ÷ 15 = 16 seconds.
- 2275.
A can finish a job in 3 days and B in 6 days. Working together, how many days will they take?
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Answer: A. 2 days
Together they do 1/3 + 1/6 = 1/2 of the job per day, so 2 days.
- 2276.
A can finish a job in 4 days and B in 12 days. Working together, how many days will they take?
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Answer: C. 3 days
Together they do 1/4 + 1/12 = 1/3 of the job per day, so 3 days.
- 2277.
A can finish a job in 5 days and B in 20 days. Working together, how many days will they take?
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Answer: B. 4 days
Together they do 1/5 + 1/20 = 1/4 of the job per day, so 4 days.
- 2278.
A can finish a job in 6 days and B in 30 days. Working together, how many days will they take?
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Answer: C. 5 days
Together they do 1/6 + 1/30 = 1/5 of the job per day, so 5 days.
- 2279.
A can finish a job in 7 days and B in 42 days. Working together, how many days will they take?
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Answer: A. 6 days
Together they do 1/7 + 1/42 = 1/6 of the job per day, so 6 days.
- 2280.
A can finish a job in 8 days and B in 24 days. Working together, how many days will they take?
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Answer: B. 6 days
Together they do 1/8 + 1/24 = 1/6 of the job per day, so 6 days.