in Quantitative Aptitude
2 votes
2 votes
After striking a floor a rubber ball rebounds 5/6 th of the height from which it has fallen. Find the total distance (in metres) that it travels before coming to rest,if it gently dropped from a height of 210 metres.
in Quantitative Aptitude
128 points

1 Answer

2 votes
2 votes
Best answer

The first drop is 210 metres. After this the ball will rise by 175 metres and fall by 175 metres which is  5/6 th of 210 .

This process will continue in the form of infinite GP with common ratio 5/6 and first term 175.

The required answer is given by the formula:

that is 175/(1 - 5/6) = 1050 metres.

Hence, 1050 metres is the answer.

selected by
2.7k points

Related questions

Quick search syntax
tags tag:apple
author user:martin
title title:apple
content content:apple
exclude -tag:apple
force match +apple
views views:100
score score:10
answers answers:2
is accepted isaccepted:true
is closed isclosed:true