# Aptitude Questions : Chain Rule Set 3

Hello Aspirants. Welcome to Online Maths in AffairsCloud.com. Here we are creating question sample in **Chain Rule**, which are common for competitive exams. We have included Some questions that are repeatedly asked in exams !!

**10 machines can wash 20 cars in 6 hours. In how many hours can 15 machines wash 40 cars?**

A) 8

B) 7

C) 15

D) 12

E) 6**To build a house, 5 men take 60 days working 8 hours each day. In how many days 2 such houses can be built by 8 men working 10 hours each day?**

A) 75

B) 50

C) 20

D) 60

E) None of these**2 men and 4 women can complete a job in 5 days. Also same job can be completed by 3 men and 8 women in 3 days. In how many days, twice the job can be completed by 3 men and 3 women?**

A) 4

B) 8

C) 10

D) 8.5

E) 13**A job that can be completed by 2 men and 6 women in 10 days will be completed by 5 men and 15 women in how many days?**

A) 2

B) 3

C) 5

D) 4

E) Cannot be determined**There is sufficient food for 40 men for a 15 days picnic. If after 6 days 4 men leave, how many more days can the remaining men intake food?**

A) 8

B) 5

C) 10

D) 1

E) 3**A job is completed by 5 men or 7 women in 40 days, then in how many days thrice the job as previous will be completed by 5 men and 3 women?**

A) 27

B) 28

C) 38

D) 84

E) 90**10 women completed 2/7th of work in 18 days working 6 hours each day. After this 5 women left and 2 men joined. In how many days working same number of hours, the remaining work will get completed if 1 man is equal to 2 women?**

A) 50

B) 55

C) 70

D) 58

E) 62**20 carpets are to weave by 40 women in 50 days working 8 hours per day. After 20 days, order of 6 more carpets came. To complete the total work on time, how many more hours per day they will have to work?**

A) 2

B) 4

C) 5

D) 10

E) 12**A work is to completed. 10 men started the work and completed 1/6th of the work in 5 days working 3 hrs each day. 2 more men are employed. In how many days will the total number of men complete four times work as before working 5 hours each day?**

A) 12

B) 18

C) 10

D) 20

E) 15**2 men or 4 women or 5 children can complete a piece of work in 38 days. In how many days will 1 man, 1 woman and 1 child complete the same work?**

A) 20

B) 40

C) 36

D) 42

E) None of these

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