Question

The person A can do a work in 5 days and the person B can do it in 8 days. In how many will they do it together? days person A can do a piece of work in 12 days while the person B can do it in 18 day.
Answer
A` S 1 day work=1/5
B` S 1 day work=1/8
(A+B) `S 1 day work=1/5+1/8
=5+8/40
=13\40
=40÷13
3/1/13
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Answer 1

Step-by-step explanation:

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