7. A does a piece of work in 3 days. B and A
together do the work in 2 days. How many
days will B take to do the work?
Answers
Answered by
12
Answer:
6 days
Step-by-step explanation:
A does the work in 3 days,
In 1 day A does 1/3 piece of work
A and B does work in 2 days,
In 1 day A and B do 1/2 of work
let B does the work in x days,
therefore in 1 day B does 1/x piece of work.
A/Q
1/3+1/x=1/2
x=6
Answered by
5
Step-by-step explanation:
a A does the work in 3 days
In 1 day A does 1/3 piece of work
A and B does the work in 2 days.
In one day A and B do 1/2 of work
let b does the work in n days,
therefore in 1 day B does 1/n piece of work.
B.T.Q
1/3 + 1/n =1/2
n=6
hope it helped
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