Q1. 2 men and 5 boys complete a work in 12 days and 3 men and 6 boys complete it in 9 days have long it take to do a whole work
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(2m + 5b) ×12 = (3m +6b)×9
8m + 20b = 9m + 18b
2b = m
M:B = 2:1
So total work = (2×2+5×1)×12
But they work together
So 10×12/3 =40days
8m + 20b = 9m + 18b
2b = m
M:B = 2:1
So total work = (2×2+5×1)×12
But they work together
So 10×12/3 =40days
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