Question

Tanu can do a piece of work in 24 days and Manisha can do it in 30 days. How long

will they take to do the working together?​

Answer 1

Answer:

15 daya

Explanation:

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Answer 2

Answer:

320 hours

Explanation:

In 24 days tanu does a piece of work

Therefore, in 1 day tanu does 1/24 piece of work

Similarly, in 1 day manisha does 1/30 piece of work

So, in 1 day both of them do {(1/24) +(1/30)} piece of work, i.e, 9/120 piece of work

Now, if they together do 9/120 piece of work in 1 day, then they do a piece of work in [ 1÷(9/120)] days, i.e, 40/3 days which is {24×(40/3)} hours or 320 hours.