If 3 men or 4 women can complete a certain job in 43 days,how long will 7 men and 5 women take to complete it?
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4women= 3 men
5..............= 3×5/4=15/4men
now, 7men+5women= 7 men+15/4 men= 43/4 men
a/q
3men complete in 43 day
1 ...............................43×3 day
43/4 ......................43×3×4/43=12 day
5..............= 3×5/4=15/4men
now, 7men+5women= 7 men+15/4 men= 43/4 men
a/q
3men complete in 43 day
1 ...............................43×3 day
43/4 ......................43×3×4/43=12 day
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