Question
Ratio of the work done by P, Q and R in one day is 7:5:9
respectively. They all together can complete the work in 35 days. Q and R worked on it for 21 days. In how many days P will complete the remaining work.Solution
Let total amount work be = 35 x 21 = 735 units Amount of work done by Q and R in 21 days = 21 x 14 = 294 units Amount of work left = 735 – 294 = 441 Required time = 441/7 = 63 days
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