Question

A efficiency is thrice of B. If B complt their work in if A complt their work in 60 days.so how many days A and B both complt the work???

Answer 1

Hi Friend ,
As efficiency of A is thrice of b , so , b will do the work in 180 days , as A does it 3 times faster , 
so , by the formula , 
1/time taken by A + 1/time taken by B = 1/time taken by them toghther
1/60+1/180 =1/45
so , they both will toghther take 45 days
wish it helps ^_^