Solution (Question:97568.0)

Online Courses

Offline Courses

Test Series

Resources

Join Us

+91 7676564400

support@toprankers.com

Mobile App

Mock Tests

Practice

Assignment

Study Notes

SSC Articles

Discussions

Online Coaching

GK- Current Affairs

Bookmarked Questions

Descriptive Papers

Discussions

Select Date

Tags:

Submit Discussion

HIRA LAL MAHTO

· started a discussion

· 1 Months ago

Solution (Question:97568.0)

Any other solution. Can explain more effectively?

Knowledge Expert

· commented

· 1 Months ago

Dear Student, its because Speed is inversely proprtional to Time Keep Learning with Us Best Wishes Team Toprankers

amit vasishth

· started a discussion

· 1 Months ago

solution (Question: 97568.0 )

solution is not understandable please provide appropraite solution for this question.

Question:

The speed of a car during the second hour of its journey is thrice that in the first hour. Also its third hours speed is the average speed of the first two hours. Had the car travelled at the second hour’s speed during all the first three hours, then it would have travelled 150 km more. Find the percentage reduction in time if the original distance covered by second hour’s speed:

Options:

A) \(33\frac{1}{3}\%\)

B) 40%

C) 25%

D) 50%

Solution:

Ans: (a)

First Second Third Total

hour hour hour

Initial speed x 3x 2x 6x

New speed 3x 3x 3x 9x

∴ Percentage increase in speed = \(\cfrac{3x}{6x}\) × 100 = 50%

Since speed is increased by (50%) \(\cfrac{1}{2}\)

Therefore, time will reduce by (33.33%) \(\cfrac{1}{3}\)

We at aim to provide most comprehensive content & test for practice which is carefully divided into various chapters and topics to help you focus on your weak areas.Our Practice mock test gives you unmatched analytics to help you realize your strong areas,time management and improvement areas.Our Short & Crisp notes on each topic will help you to quickly revise the topic along with the tips & tricks of the exams.

More About