Walking at 3/4 of his normal pace, a student is 12 minutes late. Find his usual time. MCQ with Answer and Explanation

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Walking at 3/4 of his normal pace, a student is 12 minutes late. Find his usual time.

A. 32 minutes

B. 44 minutes

C. 36 minutes

D. 40 minutes

Answer: Option C

Solution (By JKSSB Mock Tests)

New speed = 3/4 of usual speed => New time = 4/3 of usual time. Difference = 1/3 of usual time = 12 minutes. Usual time = 12 * 3 = 36 minutes.

This question belongs to: Maths Time Speed and Distance

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Question #1

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A passenger train passes a single sign post in 8 seconds. If the length of the train is 160 meters, find its speed in km/h.

A. 72 km/h

B. 84 km/h

C. 64 km/h

D. 80 km/h

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Correct Answer: Option A

Explanation:
Speed = 160 / 8 = 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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Excluding stoppages, a transit bus maintains an average speed of 75 km/h, and including stoppages its speed is 60 km/h. Find the stoppage time per hour.

A. 18 minutes

B. 12 minutes

C. 15 minutes

D. 10 minutes

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Correct Answer: Option C

Explanation:
Stoppage time per hour = (Fast speed - Slow speed) / Fast speed = (75 - 60) / 75 = 15 / 75 = 1/5 hour. Converting to minutes = (1/5) * 60 = 15 minutes.

This question belongs to: Maths Time Speed and Distance