Work and Time (SSC)

Total Questions: 50

11. A can finish a work in 24 days and B in 30 days, individually. They work together for 11 days. The percentage of the work still to be finished will be: [SSC CHSL 10/08/2023 (4th Shift)]

Correct Answer: (c) 17.5%
Solution:

12. In an army camp, there is food provision for 500 cadets for 25 days. If 125 more persons join the army camp on the first day itself, then for how many days will the provision last ? [SSC CHSL 08/08/2023 (3rd Shift)]

Correct Answer: (a) 20
Solution:

13. A can do a piece of work in 24 days and B can do the same work in 30 days. If they work on it together for 8 days, then the fraction of the work that is left is: [SSC CHSL 04/08/2023 (4th Shift)]

Correct Answer: (b)
Solution:

14. Disha takes 12 hours to copy a 75 - page manuscript, while Mohit can copy the same manuscript in 10 hours. How many hours will it take for them to copy a 150 - page manuscript if they work together? [SSC CHSL 03/08/2023 (4th Shift)]

Correct Answer: (a)
Solution:

15. A man and a woman can finish a work together in half the time taken by a woman and a boy together. A boy can finish the work alone in 20 days and 2 women together can finish it in 30 days. In how many days will the work be finished by 4 men ? [SSC CGL 18/07/2023 (4th shift)]

Correct Answer: (b) 2.14
Solution:

16. A, B and C can finish a work in 15 days working alternately in the same order. The efficiency of A is the same as that of B, and the efficiency of C is equal to that of A. In how many days will the work be finished if they work alternately in the order C, A and B ? [SSC CGL 26/07/2023 (3rd shift)]

Correct Answer: (c) 15
Solution:

17. A can do 1/3 of a piece of work in 32 days, B can do 37½% of the same work in 24 days, while C can do 60% of the same work in 48 days. B and C together started and worked for x days. After x days, B left the work and A joined C and both completed the remaining work in (x + 8) days. If the ratio of the work done by (B + C) together to the work done by (A + C) together is 9 : 11, then what fraction of the same work can be completed by C alone in 3.5 x days ? [SSC CGL 25/07/2023 (2nd shift)]

Correct Answer: (c)
Solution:



18. (N + 18) persons, each working for 7.5 hours a day, can complete 48% of a work in 20 days. (N + 12) persons can complete the remaining work in 30 days, if each of them works for 6.5 hours per day. Determine the value of N. [SSC CGL 19/07/2023 (1st shift)]

Correct Answer: (a) 18
Solution:

19. Suresh and Anil are working on a special project. Suresh takes 5 hours to type 40 pages and Anil needs 6 hours to type 32 pages on a computer. How much time will it take them to type a 110-page assignment if they work on two different computers ? [SSC CGL 18/07/2023 (4th shift)]

Correct Answer: (a) 8 hours 15 minutes
Solution:

20. Raja and Rocky together can complete painting work in 5 days. Together they both start painting, but after 2 days, Rocky falls sick and leaves the work. If Raja completes the remaining painting in 4 days, find the number of days in which Rocky alone can do the work. [SSC CGL 18/07/2023 (2nd shift)]

Correct Answer: (c) 20
Solution: