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4 men or 6 women or 10 children can paint a house in 5 days. The painting is given to a couple and their 5 sons. They finish the job in ?
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- 11/60 days
- 55/11 days
- 56/11 days
- 111/5 days
Correct Option: B
4 men = 6 women = 10 children
⇒ 1 man = 5/2 children
1 women = 5/3 children
Now, 1 couple + 5 children = 1 man + 1 women + 5 children
= (5/2) + (5/3) + 5 = 55/6 children
According to the formula
M1D1 = M2D2
⇒ 10 x 5 = (55/6) x D2
∴ D2 = 60/11 days
= 55/11 days
