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Question

4 men and 3 women finish a job in 6 days. And 5 men and 7 women can do the same job in 4 days. How long will 1 man and 1 woman take to do the work?

A
2227days
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B
2512days
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C
517days
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D
12722days
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Solution

The correct option is

A

2227days



(4 men +3 women)×6 days=(5 men +7 women)×4 days

24 men +18 women=20 men +28 women

4 men days =10 women days

1 men days =2.5 women days ...(i)

Total work to be done =24 men days +18 women days

=60 women days +18 women days [From (i)]

=78 women days

Work done by 1 man +1 women =2.5 women +1 women =3.5

Both a man and a woman can complete the entire work in =783.5=22(27) days


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