Question

a can do a piece of work in 15 days while B can do it in 10 days how long will they take together to do it​

Answer 1

Answer:

They can do it in 6 days.

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Answer 2

Answer:

Step-by-step explanation:

A's 1 day's work- 1/15

B's 1 day's work- 1/10

(A+B)'s 1 day's work= [1/15+ 1/10] = 5/30= 1/6= 6 days.