Question

If 15 men can complete a piece of work in 30 days,in how many days will 18 men complete it?

Answer 1

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18:30::15:x

➦ 18 × x = 15 × 30

➦ x = $\frac{15 \times 30}{18}$

➦ x = 25

Hence , 18 mens can complete the work in 25 days .