Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • School
  • A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is :

A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is :

Answers (1)

A can work in 15 days, so one day's work of A = 1/15th of work

B can work in 20 days, so one day's work of B = 1/20th of work

one day's work of A+B together = 1/15+1/20 = 7/60 th of work

4 day's work of A+B together = 4x7/60 = 7/15th of work

Hence remaining work = 1-7/15 = 8/15th of work.

Posted by

Ravindra Pindel

View full answer

Similar Questions

Latest Question