A does 20% less work than …
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Posted by Umang Mittal 7 years, 3 months ago
- 2 answers
Rashmi Bajpayee 7 years, 3 months ago
According to question,
B can finish in 15/2 × 100 / (100 + 20)
= 25/4 = 6 1/4 h
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Naveen Sharma 7 years, 2 months ago
Ans. Let Time taken by B = x hours
then work done by B In 1 Hour = 1/x
as A does 20% less,
So work done By A in 1 Hour =(1/x) -(20% *1/x)
=> 1/x - 1/5x => 4/5x
Then time taken by A = 5x/4
according to Question, 5x/4 = 15/2
x = 6
So B can finish in 6 hours.
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