A car covers a certain distance at 50 km/h. If the speed is increased to 75 km/h, it arrives 20 minutes earlier. Find the distance. MCQ with Answer and Explanation

Question

A car covers a certain distance at 50 km/h. If the speed is increased to 75 km/h, it arrives 20 minutes earlier. Find the distance.

A. 50 km

B. 55 km

C. 60 km

D. 45 km

Answer: Option A

Solution (By JKSSB Mock Tests)

Time difference = 20 minutes = 20/60 = 1/3 hour. Let distance be d. d / 50 - d / 75 = 1/3 => (3d - 2d) / 150 = 1/3 => d / 150 = 1/3 => d = 50 km.

This question belongs to: Maths Time Speed and Distance

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Time Speed and Distance Questions

Question #1

Share Report

A person covers a distance of 100 km at 25 km/h and another 150 km at 50 km/h. Find his average speed for the whole journey.

A. 35.71 km/h

B. 35.5 km/h

C. 38.25 km/h

D. 37.50 km/h

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option A

Explanation:
Total distance = 100 + 150 = 250 km. Total time taken = 100/25 + 150/50 = 4 + 3 = 7 hours. Average speed = 250 / 7 = 35.71 km/h.

This question belongs to: Maths Time Speed and Distance

Question #2

Share Report

A passenger train clears a station side signal pillar in exactly 12 seconds. If the length of the train is 180 meters, find its speed in km/h.

A. 72 km/h

B. 54 km/h

C. 60 km/h

D. 48 km/h

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option B

Explanation:
Speed of train = 180 / 12 = 15 m/s. Converting to km/h = 15 * (18/5) = 54 km/h.

This question belongs to: Maths Time Speed and Distance

Question #3

Share Report

A boat can row 14 km/h in still water and the speed of the current is 2 km/h. Find the time taken to row 36 km upstream.

A. 4.0 hours

B. 2.5 hours

C. 3.0 hours

D. 3.5 hours

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option C

Explanation:
Upstream speed = 14 - 2 = 12 km/h. Time taken = 36 / 12 = 3 hours.

This question belongs to: Maths Time Speed and Distance

Explore All Time Speed and Distance MCQs