If 3 men or 4women can reap a field in 43days how long will 7men and 5 women take to reap it
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time taken by 7 M & 5 women = 12 days
another way is by using formula
W1×D1 = W2×D2
4×43 = 43/3×D2
D2 = 4×43×3/43
12
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