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Aptitude > Math > Time and work
1
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?
1
12 days
2
15 days
3
16 days
4
18 days
Answer:
Option2
2
Some carpenters promised to do a job in 9 days but 5 of them were absent and remaining men were absent and remaining men did the job in 12 days. The original number of carpenters was
1
24
2
20
3
16
4
18
Answer:
Option2
3
A and B can do a work in 12 days, B and C in 15 days and C and A in 20 days. If A, B and C work together, they will complete the work in:
1
5 days
2
8 days
3
10 days
4
9 days
Answer:
Option3
4
Babu and Asha can do a job together in 7 days. Asha is 7/4 timesas efficient as Babu. The same job can be done by Asha alone in
1
22 days
2
21 days
3
11 days
4
9 days
Answer:
Option3
5
A, B and C can do a piece of work in 30, 20 and 10 days respectively. A is assisted by B on one day and by C on the next day, alternately. How long would the work take to finish?
1
9days
2
4days
3
8days
4
3days
Answer:
Option1
6
A and B can do a work in 18 and 24 days respectively. They worked together for 8 days and then A left. The remaining work was finished by B in:
1
5 days
2
16/3 days
3
8 days
4
10 days
Answer:
Option2
7
A is 50% as efficient as B. C does half of the work done by A and B together. If C alone does the work in 20 days, then A, B and C together can do the work in
1
17/3 days
2
20/3 days
3
6 days
4
7 days
Answer:
Option2
8
1 A road of 5 km length will be constructed in 100 days. So 280 workers were employed. But after 80 days it was found that only 3km road was completed Now how many more people were needed to finish the work in the specified time?
1
480
2
80
3
200
4
100
Answer:
Option3
9
Q14. A, B and C can complete a work in 10, 12 and 15 days respectively. But A left the work before 5 days of its completion. B also left the work 2 days after A left. In how many days was the work completed?
1
4 days
2
5 days
3
7 days
4
8 days
Answer:
Option3
10
If 6 men and 8 boys can do a piece of work in 10 days while 26 men and 48 boys can do the same in 2 days, the time taken by 15 men and 20 boys in doing the same type of work will be
1
4 days
2
5 days
3
6 days
4
7 days
Answer:
Option1
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