Question
A can do a piece of work in 12 days, while B
alone can do it in 18 days. They work together for 6 days and the rest of the work is completed by C in 4 days. If they get Rs. 720 for the whole work, how should they divide the money?Solution
Work done by A and B in 6 days = (1/12 + 1/18) × 6 = 5/6 Work remaining = 1 - 5/6 = 1/6 ∴ C alone can do the work in 6 × 4= 24 days Ratio of their share work = 6/12 : 6/18 : 4/24 = 3:2:1 Share of A’s wages = 3/6 × 720 = Rs. 360 Share of B’s wages = 2/6 × 720 = Rs. 240 Share of C’s wages = 1/6 × 720 = Rs. 120
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