Time & Work SSC GD Questions

SSC GD-Elementary Mathematics

Time & Work MCQ Questions


7.
10 women can complete a work in 15 days. The same work can be completed in 5 days by 15 men. 10 women started the work and after 3 days, 5 men replaced 5 women. In how many days will the work be completed?
SSC GD 2021-02.12.2021-2
A.
11
B.
10
C.
8
D.
12
😑 View Answer Rough Work Error
ANSWER :
A. 11
8.
Radha who is half as efficient as Kirti, will take 30 days to complete a task if she works alone. If Radha and Kirti work together, how long will they take to complete the task?
SSC GD 2021-02.12.2021-2
A.
20 days
B.
10 days
C.
12 days
D.
15 days
😑 View Answer Rough Work Error
ANSWER :
B. 10 days
9.
12 persons can dig a trench 20 m in length in 8 days. The number of persons required to dig a 30 m trench of the same width and depth in 6 days, is:
SSC GD 2021-02.12.2021-2
A.
24
B.
16
C.
18
D.
20
😑 View Answer Rough Work Error
ANSWER :
A. 24
10.
X can complete \( \frac{1}{4} \)of a work in 3 days and Y can complete \( \frac{1}{6} \) of the same work in 4 days. X and Y worked together for 6 days and Z alone completed the remaining work in 8 days. If Y and Z work together, how much time will they take to complete the same work?
SSC GD 2021-02.12.2021-3
A.
9\( \frac{7}{11} \) days
B.
10 days
C.
13\( \frac{5}{7} \)days
D.
12 days
😑 View Answer Rough Work Error
ANSWER :
C. 13\( \frac{5}{7} \)days
11.
Seema works at a rate such that she can finish a work in 28 h, but she works at this rate for 7 h only. After that, she works at a rate such that she can finish the remaining work in 16 h. If Seema is to finish this work at a stretch, how many hours (total) will she take to finish this work?
SSC GD 2021-02.12.2021-3
A.
21
B.
18
C.
14
D.
19
😑 View Answer Rough Work Error
ANSWER :
D. 19
12.
A and B can complete a work in 12 days and 18 days, respectively. They worked together for 4 days after which B was replaced by C and the remaining work was completed by A and C in the next 4 days. In how many days will C alone complete one-third of the same work?
SSC GD 2021-03.12.2021-2
A.
8 days
B.
12 days
C.
9 days
D.
10 days
😑 View Answer Rough Work Error
ANSWER :
B. 12 days