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7. A, B and C together can do a piece of work in 15 days. B alone can do it in 30 days andC alone can do it in 40 days. In now many days will A alone do the work? |
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Answer» Step-by-step explanation: Given, (A+B+C) can do a PIECE of WORK in = 15 days (A+B+C)’s 1 day work =151 B ALONE can do a piece of work in = 30 days B’s 1 day work =301 C alone can do a piece of work in = 40 days C’s 1 day work =401 So, A’s 1 day work =151−301+401 =151−1204+3=151−1207=1208−7=1201 ∴ A can do a piece of work in 120 days. . i hope it help you ... |
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