If 32 men and 24 days can reap a field in 9 days in how many days will 28 men and 12 boys reap it supposing that 4 men can do as much as 6 boys?
A). 20 days
B). 30 days
C). 12 days
D). 24 days
12 days
(32m+24b)9=(28m+12b)x
[Since 24b(6 * 4)b
=> 6 boys = 4 men
=> 24 boys = 16 men]
(32m+16m)9=(28m+8m)x
[since 4 men = 6 boys]
48m*9/36m = 12 days