A. 7

**B. 8**

C. 9

D. 10

Let work done by P in 1 day = p

work done by Q in 1 day =q

Work done by R in 1 day = r

p + q = 1/8 —(1)

q + r= 1/12 —(2)

p+ q+ r = 1/6 —(3)

(3) – (2) => p = 1/6 – 1/12 = 1/12

(3) – (1) => r = 1/6 – 1/8 = 1/24

p + r = 1/12 + 1/24 = 3/24 = 1/8

=> P and R will finish the work in 8 days

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### Related Mcqs:

- P can finish a work in 18 days. Q can finish the same work in 15 days. Q worked for 10 days and left the job. how many days does P alone need to finish the remaining work?
A. 8

**B. 6**

C. 4

D. 2 - C takes 6 days to complete half of a work and D takes 5 days to complete 1/3rd of the same work. They take turns to complete the task. If C works for the first 4 days, in how many days will D complete the rest of the work without the help of C?
**A. 10 days**

B. 12 days

C. 8 days

D. 9 days - A and B can finish a work 30 days if they work together. They worked together for 20 days and then B left. A finished the remaining work in another 20 days. In how many days A alone can finish the work?
A. 70

B. 50

C. 40

**D. 60** - A alone can finish a work in X days. B alone can finish the same work in X+5 days. Together, they take 6 days to complete the work. Find X
A. 12

B. 8

**C. 10**

D. 9 - P and Q can do a work in 30 days. Q and R can do the same work in 24 days and R and P in 20 days. They started the work together, but Q and R left after 10 days. How many days more will P take to finish the work?
A. 10

B. 8

**C. 18**

D. 19 - 8 children and 12 men complete a certain piece of work in 9 days. If each child takes twice the time taken by a man to finish the work, in how many days will 12 men finish the same work ?
A. 6 days

B. 8 days

C. 10 days

**D. 12 days** - A and B together can complete a work in 1.2 days,. A alone can complete it in 20 days. If B does the work only for half a day daily, then in how many days A and B together will complete the work ?
A. 10 days

B. 11 days

**C. 15 days**

D. 20 days - 10 men can complete a work in 7 days. But 10 women need 14 days to complete the same work. How many days will 5 men and 10 women need to complete the work?
**A. 7**

B. 5

C. 6

D. 4 - 3 men and 7 women can complete a work in 10 days . But 4 men and 6 women need 8 days to complete the same work . In how many days will 10 women complete the same work?
A. 50

B. 30

**C. 40**

D. 13 - A and B can finish a piece of work in 20 days .B and C in 30 days and C and A in 40 days. In how many days will A alone finish the job?
**A. 48**

B. 34(2/7)

C. 44

D. 45

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