Answers

2014-06-29T13:12:04+05:30

This Is a Certified Answer

×
Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
So given A = 3B
so the work which is done by a is x and that work is done by b is 3x
given b takes x + 60 days to complete a work
so 3x = 60 + x ⇒ x = 20
so A can do work in  20 days 
and B can do work in 20 + 60 = 80 days
so both can do the work in A + 3A = 80 + 20 days
so A = 25 days 
so a) 25 days is the answer

ANSWER
 
 
1 5 1