Excluding regular stops, an express cargo van tracks at 84 km/h and including stops it tracks at 70 km/h. How many minutes does it stop per hour? MCQ with Answer and Explanation

Question

Excluding regular stops, an express cargo van tracks at 84 km/h and including stops it tracks at 70 km/h. How many minutes does it stop per hour?

A. 10 minutes

B. 8 minutes

C. 15 minutes

D. 12 minutes

Answer: Option A

Solution (By JKSSB Mock Tests)

Stoppage time per hour = (84 - 70) / 84 = 14 / 84 = 1/6 hour. In minutes = (1/6) * 60 = 10 minutes.

This question belongs to: Maths Time Speed and Distance

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Question #1

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A train 120 meters long completely passes a static pole in 6 seconds. Find its speed in km/h.

A. 84 km/h

B. 72 km/h

C. 64 km/h

D. 80 km/h

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Correct Answer: Option B

Explanation:
Speed = 120 / 6 = 20 m/s. In km/h = 20 * (18/5) = 72 km/h.

This question belongs to: Maths Time Speed and Distance

Question #2

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A boat can row 10 km/h in still water and the river current marks 4 km/h. Find the time required to complete 42 km downstream.

A. 3.0 hours

B. 2.5 hours

C. 4.0 hours

D. 3.5 hours

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Correct Answer: Option A

Explanation:
Downstream speed = 10 + 4 = 14 km/h. Time taken = Distance / Downstream speed = 42 / 14 = 3 hours.

This question belongs to: Maths Time Speed and Distance

Question #3

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A cyclist covers a 1500-meter course in 5 minutes. Find his speed in km/h.

A. 24 km/h

B. 18 km/h

C. 20 km/h

D. 15 km/h

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Correct Answer: Option B

Explanation:
Time = 5 minutes = 300 seconds. Speed = 1500 / 300 = 5 m/s. Converting to km/h = 5 * (18/5) = 18 km/h.

This question belongs to: Maths Time Speed and Distance

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