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A, B and C contract to do a work for Rs. 6500. A can do the work in 10 days. B can do the same work in 15 days and C can do it in 20 days. Find share of B if they work together?1. Rs. 10002. Rs. 15003. Rs. 20004. Rs. 21005. Rs. 1900 |
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Answer» Correct Answer - Option 3 : Rs. 2000 Given: Contract amount for the work by A, B and C = 6500 A alone can do the work in 10 days B alone can do the work in 15 days C alone can do the work in 20 days Calculation: Work = LCM of 10, 15, 20 = 60 units Work done by A in 1 day = 60/10 = 6 units Work done by B in 1 day = 60/15 = 4 units Work done by C in 1 day = 60/20 = 3 units Share of B = (4/13) × 6500 = Rs. 2000 ∴ The share of B if they work together is Rs. 2000. |
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