Question

A can do a work in 10 days and B can complete the same work in 15. days if they work together in how many days they will complete the work​

Answer 1

6 days..................

Answer 2

HELLO.

HELLO.GUD MRNG

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 = 

(1/10+1/15)=(3+2/30)=

1/6

So together they can complete work in 6 days.

HOPE IT HELPS YOU