A can do a piece of work in 15 days and B can do it in 10 days. Working together how long will they take to finish the work?
Created: 6 years ago |
Updated: 3 years ago
best des
In 15 days A can do 1 portion
in 1 days A can do 1/15 portion
In 10 days B can do 1 portion
In 1 days B can do 1/10 portion
In 1 day A & B can do ( 1/15 + 1/10) or 2 + 3/30
or 5/30 or 1/6 portion
A & B can finish 1/6 portion in 1 day
A & B can finish 1 portion in 1/6 day
= 6 days
Md Azizur Rahman
Founder of Satt
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