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Time and Work - General Aptitude

Q1:

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 3

B 5

C 7

D Cannot be determined

E None of these

ANS:C - 7

1 woman's 1 day's work = 1
70
1 child's 1 day's work = 1
140
(5 women + 10 children)'s day's work = 5 + 10 = 1 + 1 = 1
70 140 14 14 7
 5 women and 10 children will complete the work in 7 days.