12male or 18 femal done work in 7 days then 4 male and 8 female taken how many days
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Step-by-step explanation:
12 male do some work in 7days
18females do some work in 7days
then
4(m) + 8(f) = ?
12(m) = 7
m = 7/12
18(f) = 7
f = 7/18
= 4(7/12) + 8(7/18)
= 7/3 + 28/9
= 49/9 days
= 5.44days
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