A and B can finish a work in 20 days B alone can do in 15 days They work together for 2 days and then A goes away in how many will B finish the remaining work
Answers
Answer:
A and B do a work in 20 days
In other words, the fraction of work done by A and B in 1 day is 1/20
Similarly Fraction of work done by B in 1 day is 1/15
Now A and B work together for 2 days and completed 2/ 20 or 1/10 of work.
Work left is 1- 1/10 =9/10 which B has to do
1/15 of work is done by B in 1 day
So 9/10 of it is completed by B in
9*15/10
135/10=13.5days
Answer:
13.5 days
Step-by-step explanation:
A and B do a work in 20 days
In other words, the fraction of work done by A and B in 1 day is 1/20
Similarly Fraction of work done by B in 1 day is 1/15
Now A and B work together for 2 days and completed 2/ 20 or 1/10 of work.
Work left is 1- 1/10 =9/10 which B has to do
1/15 of work is done by B in 1 day
So 9/10 of it is completed by B in
9*15/10
135/10=13.5days