Time and
Work Practice Questions Set-1

1. A can do
a piece of work  in 10 days and B can do
it 20 days. How many days will both take together to complete the work?

a) 15     b) 24/5    
c) 20/3     d) 30

2.  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:

a) 5
days     b) 8 days     c) 10 days     d) 9 days

3. 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:

a) 5
days     b) 16/3 days         c) 8 days     d) 10 days

4. A can do
a piece of work in 12 days and B can do it in 18 days. They work together for 2
and then A leaves. How long will B take to finish the remaining work?

a) 6
days     b) 8 days     c) 10 days     d) 13 days

5. A and B
working separately can do a piece of work in 10 days and 15 days respectively.
If they work on alternate days beginning with A, in how many days will the work
be completed

a) 18
days     b) 13 days     c) 12 days     d) 6 days

6. If 6 men
and 8 boys can do a piece of work in 10 days and 26 men and 48 boys can do the
same in 2 days, the time taken by 15 men and 20 boys to do the same type of
work will be:

a) 5
days     b) 4 days     c) 6 days     d) 7 days

7. 5 persons
can prepare an admission list in 8 days working 7 hours a day. If 2 persons
join hem so as to complete the work in 4 days, they need to work per day for

a) 10
hours     b) 9 hours     c) 12 hours     d) 8 hours

8. Babu and
Asha can do a job together in 7 days. Asha is 7/4 times as efficient as Babu.
The same job can be done by Asha alone in

a) 22
days     b) 21 days     c) 11 days     d) 9 days

9. A wall of
100 meters can be built by 7 men or 10 women in 10 days. How many days will 14
men and 20 women take to build a wall of 600 meters?

a) 15      b) 20    
c) 25     d) 30

10. 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

a) 17/3
days     b) 20/3 days     c) 6 days     d) 7 days

11.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

a) 24     b) 20    
c) 16     d) 18

12.  A contractor undertakes to make a road in 40
days and employs 25 men. After 24 days, he finds that only one-third of the
road is made. How many extra men should he employ so that he is able to
complete the work 4 days earlier?

a) 100     b) 60    
c) 75     d) None of these

13. A can do
a work in 5 days less than the time taken by B to do it. If both of them
together take 100 /9  days, then the time
taken by B’ alone to do the same work (in days) is

a) 15     b) 20     
c) 25     d) 30

14. 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?

a) 4      b) 5 days     c) 7 days     d) 8 days

15. 5 men
and 2 women working together can do four times as much work per hour as a man
and a woman together. The work done by a man and a woman should be in ratio:

a) 1:2     b) 2:1    
c) 1:3     d) 4:1

Answer keys

Time:Also Read: