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1. A and B can do a piece of work in 30 days, while B and C can do the same work in 24 days and C and A in 20 days. They all work together for 10 days when B and C leave. How many days more will A take to finish the work?





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  • By: guest on 01 Jun 2017 05.49 pm
    2(A + B + C)'s 1 day's work = 1 + 1 + 1 = 15 = 1 . 30 24 20 120 8 Therefore, (A + B + C)'s 1 day's work = 1 = 1 . 2 x 8 16 Work done by A, B, C in 10 days = 10 = 5 . 16 8 Remaining work = 1 - 5 = 3 . 8 8 A's 1 day's work = 1 - 1 = 1 . 16 24 48 Now, 1 work is done by A in 1 day. 48 So, 3 work will be done by A in 48 x 3 = 18 days. 8 8
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