1 .	42 men take 25 days to dig a pond. If the pond would have to be dug in 14 days, then what is the number of men to be employed?
[ A ]    67 [ B ]    75 [ C ]    81 [ D ]    84
Answer : Option B Explanation : Let the number of men be n? Men $42\\n↓$ boys $25\\14↑$ ∴ $n\over42$ =$25\over14$ $\implies$ n =75
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