Question
A can complete 15% of the work in 20% of the allotted
time. A and B worked for the entire period of the allotted time and the work was completed on time. What portion of the work was done by B?Solution
Let the total time taken by them be 100 minutes. So, Â 20% of 100 minutes = 20 minutes Now, 15% of work is completed in 20 minutes by A 3% of work is completed in 4Â minutes by A 75% of work is completed in 100Â minutes by A If A can complete 75% in 100 minutes, then, B will complete the remaining portion i.e. (100 - 75) = 25% Â 25% of the work was done by B.
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