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A and B can do a piece of work in 30 day...

A and B can do a piece of work in 30 days and 18 days respectively. A started the work alone and then after 6 days B joined him till the completion of the work. In how many days has the whole work completed?
A और B क्रमशः किसी काम को 30 दिन और 18 दिन में पूरा करते है | A किसी काम को अकेले शुरू करता है और छह दिन बाद B उसके साथ काम खत्म होने तक काम करता है | पूरा काम कितने दिन में खत्म होगा ?

A

12

B

9

C

15

D

17

Text Solution

Verified by Experts

The correct Answer is:
C
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