Question
A can complete a piece of work in 10 days and B can
complete the same work in 15 days. If both work together, in how many days will the work be completed?Solution
Let total work = LCM of 10 and 15 = 30 units A’s 1-day work = 30 ÷ 10 = 3 units B’s 1-day work = 30 ÷ 15 = 2 units Together in 1 day = 3 + 2 = 5 units Time to finish 30 units = 30 ÷ 5 = 6 days Answer: 6 days
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