Sample Materials of SSC CGL (Tier -2) Study Kit

Subject: Numerical Aptitude

Topic: Time and Work

1.A and B together can do a piece of work in 12 days, which B and C together can do in 16 days. After A has been working at it for 5 days and B for 7 days, C finishes it in 13 days. In how many days C alone will do the work?

(a) 16
(b) 24
(c) 37
(d) 48

2. A and B can do a piece of work in 45 days and 40 days respectively. They began to do the work together but A leaves after some days and then B completed the remaining work in 23 days. The number of days after which A left the work was:

(a) 11
(b) 7
(c) 9
(d) 12

3. A can do a piece of work in 14 days which B can do in 21 days. They begin together but 3 days before the completion of the work, A leaves off. The total number of days to complete the work is:

(a) 33/5
(b) 17/2
(c) 51/5
(d) 27/2

4. A, B and C can complete a work separately in 24, 36 and 48 days respectively. They started together but C left after 4 days of start and A left 3 days before the completion of the work. In how many days will the work be completed?

(a) 15 days
(b) 24 days
(c) 25 days
(d) 38 days

5. A, B and C together earn Rs300 per day, while A and C together earn Rs188 and B and C together earn Rs152. The daily earning of C is:

(a) Rs40
(b) Rs70
(c) Rs112
(d) Rs160

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