Two men and 7 children complete a certain piece of work in 4 days, while 4 men and 4 children complete the same work in only 3 days. The number of days required by 1 man to complete the work is :



[ A ]    60 days
[ B ]    15 days right
[ C ]    6 days
[ D ]    51 days
[ E ]    52 days
Answer : Option B
Explanation :
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