If A can complete a job in 15 days and B can complete the same job in 20 days, thenhow many days (rounded up to the nearest two decimal places) will it take for both Aand B to complete the job together?
Given:
A can complete the job in 15 days.
B can complete the job in 20 days.
We need to find the number of days it will take for both A and B to complete the job together.
Solution:
Work rate of A =
Work rate of B =
The total work rate of A and B working together is:
Total work rate =
Total time taken together:
Alternate Solution:
Total Work = LCM of 15, 20 = 60
Efficiency of A = = 4 units
Efficiency of B = = 3 units
Time taken together =
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Suggested Test Series
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