Question

a can do a work in 10 days and a and b can a work in 15 days,how many days will b take to do the same work

Answer 1

Hey there
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The correct answer is:
Firstly we will find 1 day work of both A and B, then by adding we can get collective days for them,
So,
A's 1 day work = 1/10
B's 1 day work = 1/15

(A+B)'s 1 day work =
(110+115)=(3+230)=16

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Hope this helps you
By jerman