Question
Download Solution PDFA can do a work in 4 days and B in 12 days. If they work on it together for 2 days, then the fraction of the work that will be left is:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven :
A can do a piece of work in 4 days
B can do a piece of work in 12 days
They worked together for 2 days.
Formula Used :
Work done = time × efficiency
Calculation :
Total work = LCM(4,12) = 12
Efficiency of A = 3
Efficiency of B = 1
Work done in 2 days = 2 × (3 + 1) = 8
Fraction of work still left = 4/12 = 1/3
∴ The correct answer is 1/3.
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