Chain Rule

If 4 people can do a piece of work in 16 days working 5 hours each day. In how many the same work will be completed by 20 people working 4 hours each day?
A) 10
B) 8
C) 4
D) 6

Answer

If 20 people can complete 2/5th of a work in 6 days working 4 hours each day, then how much work will be completed by 30 people in 2 days working 8 hours each day? 

A) 1
B) 4/5
C) 3/5
D) 2/5

Answer

10 people complete 2/5th of work in 8 days working 5 hours each day. How many additional men are needed to complete the work in a total of 14 days working same number of hours each day as earlier?

A) 12
B) 10
C) 30
D) 20

Answer

A certain number of answer sheets can be checked in 12 days working 5 hours each day by 9 examiners. For how many hours a day should 4 examiners work to check twice the number of answer sheets in 30 days? 

A) 4 hours
B) 8 hours
C) 7 hours
D) 9 hours

Answer

A camp can provide food to 150 men for 45 days. After 10 days, 25 left the camp. What is the number of days for which the remaining food will last now? 

A) 42
B) 48
C) 40
D) 30

Answer

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