24.10 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?
A. 1 B. 3
C. 5 D. 7
Answer:
1 woman's 1 day's work = 1/70
1 child's 1 day's work = 1/140.
(5 women +10 children)'s 1 day's work = (5/70+10/140)
= (1/14+1/14)
= 1/7.
5 women + 10 children will complete the work in 7 days.
