Question

Prabha can embroider a saree in 15 days her sister in law Ruchi can do the job in 10 days they start embroidering the saree together but two days later Ruchi give up the work and goes up to her parents .In how many days will Prabha finish the remaining work of embroidering the saree.

Answer 1

Hey Mate :

Prabha can work in ==> 15 days

Ruchi can inwork ==> 10 days

Taking L C M

15 and 10 = 30units

Then prabha can work in one day => 2 Units

And Ruchi can work in one day => 3 Units

(Note : Here 2 and 3 are both efficiency)

Given :

After 2 days Ruchi give up work.

So Ruchi's work in 2 days =. 2 × 3 = 6 Units

And prabha's work => 2 × 2 = 4 Units

Then total work wil be done by both => 6 + 4

=> 10 Units

Now Remaining Units will be:

=> 30 - 20 = 20 Units

These 20 Units will be done by Prabha

because Ruchi has been left the work :

So Prabha Can the remaining work in :

=> 20/2

=> 10 Days

Hope it helps you.

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