Excluding institutional stops, a transit bus routes at 60 km/h and including stops it runs at 50 km/h. How many minutes does the bus stop per hour? MCQ with Answer and Explanation

Question

Excluding institutional stops, a transit bus routes at 60 km/h and including stops it runs at 50 km/h. How many minutes does the bus stop per hour?

A. 12 minutes

B. 15 minutes

C. 8 minutes

D. 10 minutes

Answer: Option D

Solution (By JKSSB Mock Tests)

Stoppage time per hour = (60 - 50) / 60 = 10 / 60 = 1/6 hour = 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 passing a warehouse platform 280 meters long takes exactly 20 seconds. Find the velocity index of the train in km/h.

A. 80 km/h

B. 64 km/h

C. 72 km/h

D. 84 km/h

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Correct Answer: Option C

Explanation:
Total distance = 120 + 280 = 400 meters. Speed = 400 / 20 = 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 person can row 10 km/h in still water. If the speed of the river current is 3 km/h, find the time taken to row 28 km upstream.

A. 6 hours

B. 5 hours

C. 4 hours

D. 3 hours

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Correct Answer: Option C

Explanation:
Upstream speed = 10 - 3 = 7 km/h. Time taken = 28 / 7 = 4 hours.

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Question #3

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A train passes a static milepost in exactly 7 seconds. If the speed of the train is 72 km/h, find the absolute length of the train.

A. 160 meters

B. 120 meters

C. 140 meters

D. 180 meters

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Correct Answer: Option C

Explanation:
Speed of train = 72 * (5/18) = 20 m/s. Length of train = Speed * Time = 20 * 7 = 140 meters.

This question belongs to: Maths Time Speed and Distance

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