How to solve this?
Answers
Answer:
11 days
Step-by-step explanation:
Given-
A can complete the whole work in 25 days.
B can complete the whole work in 20 days.
Solution
Let '1' depict the whole work
therefor -
Work done by A in one day = 1/25
Work done by B in one day =1/20
Total work done if they work together for one day = (1/25 + 1/20)
= 9/100
Total work done if they work together for 5 days = 9/20
Amount of work left after 5 days = 1-9/20
=11/20
It is given that 'A' left the work after 5 days which means rest of the work will be done by 'B' at a pace of 1/20 work done per day.
Total time that B will take to complete the remaining work = (11/20)÷(1/20)
=11 days
Hence B will take 11 days to complete the remaining work.
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