[ A ] 41 

[ B ] 48  
[ C ] 52  
[ D ] 61 
[ A ] 41 

[ B ] 48  
[ C ] 52  
[ D ] 61 
Answer : Option A 
Explanation : 
1 man does the work in $1 \over 4$ day $1\over 3$ x $1 \over 4$ = $1 \over 12$ part 1 woman does the work in $1 \over 4$ day $1 \over 4$ x $1 \over 4$ = $1 \over 16$ part Total work done by one man and one woman = $1 \over 12$ + $1 \over 16$ = $4 + 3 \over 46$ = $7 \over 48$ So, Remaining work = 1  $7 \over 48$ = $41 \over 48$ part So, The number of boys = $41 \over 48$ $\times$ 48 = 41 boys 
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