QUANTITATIVE APTITUDE - TIME AND WORK SET 02

TIME AND WORK SET 02

1.A can do a job in 4 days and B can do the same job in 6 days. If A’s efficiency increases to 4/3 times, then by how many times B has to reduce his efficiency so that the work can be completed by both of them in two days?
 

A : times    B : 2 times    C : times    D : times    E : None of these
 

2. A and B together can complete a piece of work in 8 days. B and C together can complete the same work in 12 days. C and A together can complete the same work in 16 days. A and B began the work together and left after some days. C finished the remaining work. If it took a total of 74 days to complete the entire work, for how many days did A and B work together?
 

A : 3         B: 4         C: 2        D : 6        E : None of these
 

3.Work done by P in one day is double the work done by Q in one day and work done by Q in one day is thrice the work done by R in one day. If P, Q and R together can complete the work in 30 days then in how many days P alone can do the work?
 

A : 55 days    B : 45 days     C: 35 days    D : 40 days    E : 50 days
 

4.A can do a certain work in 24 days whereas B can do the same work in 32 days. They took the help of C and together completed the same work in 12 days. If they received Rs.2112 for doing the work, what is C’ s share?
 

A : Rs.264    B : Rs.396    C : Rs.420    D : Rs.528    E : None of these
 

5.P and Q can complete a job in 20 days working together. P and R can complete it in 30 days working together. Q and R can complete it in 40 days working together. Find the time taken by P, Q and R to complete it working together.
 

A : 220/13 days        B : 100/3 days        C : 200/12 days        D : 240/13 days         E: None of these
 

6.A alone can do a piece of work in 6 days and B alone in 8 days. A and B undertook to do it for Rs. 3200. With the help of C, they completed the work in 3 days. How much is to be paid to C?
 

A : Rs 400    B : Rs 600    C : Rs 300    D : Rs 350    E : None of these
 

7.A is thrice as good as workman as B and therefore is able to finish a job in 60 days less than B. Working together, they can do it in:
 

A: 20 days    B : 22(1/2)days         C: 25 days    D : 30 days    E : None of these
 

8.A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day?
 

A : 12 days    B : 15 days    C : 16 days    D : 18 days    E : None of these
 

9.A and B together can complete a work in 12 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    E : None of these

10.If A can do 1/4 of a work in 3 days and B can do 1/6 of the same work in 4 days, how much will A get if both work together and are paid Rs. 180 in all?
 

A : Rs 150    B : Rs 100    C : Rs 120    D : Rs 160    E : None of these

Answer Keys:
1.E
2.C
3.E
4.A
5.D
6.A
7.C
8.B
9.C
10.C