10 women can complete a work in 7 days and 10 children take 14 days to complete the work. How many days will 5 women and 10 children take to complete the work?
Answer & explanation
Correct answer: option 3
10 W = 7 days, so 5 W = 14 days
10 C = 14 days
Efficiency of 5W = 2
Efficiency of 10C = 2
Efficiency of 5W + 10C = 4
Total days required by 5W and 10C = \(\frac{28 }{ 4}\) = 7 days