Walking at 4/5 of his normal pace, a student is 8 minutes late. Find his usual time. MCQ with Answer and Explanation

Walking at 4/5 of his normal pace, a student is 8 minutes late. Find his usual time.
A. 32 minutes
B. 40 minutes
C. 28 minutes
D. 36 minutes
Answer: Option A
Solution (By JKExamLibrary)
New speed = 4/5 of usual speed => New time = 5/4 of usual time. Difference = 1/4 of usual time = 8 minutes. Usual time = 8 * 4 = 32 minutes.

This question belongs to: Maths Time Speed and Distance

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Practice More Time Speed and Distance Questions

Question #1 Report Error
A commuter train passes a standing track post in 6 seconds flat. If the length of the train is 150 meters, find its speed in km/h.
A. 110 km/h
B. 80 km/h
C. 90 km/h
D. 100 km/h

Correct Answer: Option C


Explanation:
Speed = 150 / 6 = 25 m/s. In km/h = 25 * (18/5) = 90 km/h.

This question belongs to: Maths Time Speed and Distance
Question #2 Report Error
A walk at 5/6 of usual speed makes a person 10 minutes late. What is his usual time?
A. 50 minutes
B. 40 minutes
C. 70 minutes
D. 60 minutes

Correct Answer: Option A


Explanation:
New Speed = 5/6 of usual speed => New Time = 6/5 of usual time. Difference = 1/5 * Usual Time = 10 minutes => Usual Time = 50 minutes.

This question belongs to: Maths Time Speed and Distance
Question #3 Report Error
Two cars start from the same spot and travel along perpendicular roads. One travels at 30 km/h and the other at 40 km/h. Find the distance between them after 1 hour.
A. 50 km
B. 55 km
C. 60 km
D. 45 km

Correct Answer: Option A


Explanation:
In 1 hour, the first car travels 30 km and the second car travels 40 km. Direct distance = sqrt(30^2 + 40^2) = sqrt(900 + 1600) = sqrt(2500) = 50 km.

This question belongs to: Maths Time Speed and Distance