40 men can complete a piece of work in 40 days. ‘x’ men started the work and after 30 days 64 more men joined them so that whole work was finished in the desired time. Find the value of ‘x’
Total work = 40 × 40 = 1600 units According to question; 30 × x + 10 × (x + 64) = 1600 Or, 30x + 10x + 640 = 1600 Or, 40x = 960 Or, x = 24
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