EduSahara™ Worksheet
Name : Chapter Based Worksheet
Chapter : Time and Work
Grade : ICSE Grade VII
License : Non Commercial Use
Question
1
1.
A and B can do a work in
5
1
11
hr
,
B and C can do it in
4
hr
and C and A can do it in
5
1
11
hr
.
In how much time can
each of them do it seperately?
(i)
(
14
hr
,
8
hr
,
8
hr
)
(ii)
(
15
hr
,
9
hr
,
8
hr
)
(iii)
(
14
hr
,
9
hr
,
8
hr
)
(iv)
(
15
hr
,
8
hr
,
8
hr
)
(v)
(
14
hr
,
8
hr
,
9
hr
)
Question
2
2.
A can do
8
11
of a work in
7
3
11
hr
.
He works for
2
hr
when B joins him.
They work together and complete the work in
4
4
21
hr
.
In how much time, B alone can do the work?
(i)
10
hr
(ii)
14
hr
(iii)
11
hr
(iv)
9
hr
(v)
12
hr
Question
3
3.
4
men take
6
days
to complete a work.
How much work is done by one man in one day?
(i)
1
6
(ii)
(
-1
24
)
(iii)
1
24
(iv)
1
8
(v)
1
4
Question
4
4.
A sum of
₹434.00
will be given to do a work.
A and B can do it in
3
3
5
days
.
B and C can do in
4
2
7
days
.
C and A can do in
5
5
8
days
.
How much A, B and C respectively will get if all three work together?
(i)
(
₹84
,
₹210
,
₹140
)
(ii)
(
₹210
,
₹84
,
₹140
)
(iii)
(
₹84
,
₹140
,
₹210
)
(iv)
(
₹140
,
₹84
,
₹210
)
(v)
(
₹140
,
₹210
,
₹84
)
Question
5
5.
A sum of
₹950.00
will be given to do a work.
A and B can do it in
6
27
28
hr
.
B and C can do in
6
hr
.
C and A can do in
5
15
23
hr
.
How much A, B and C respectively will get if all three work together?
(i)
(
₹390
,
₹300
,
₹260
)
(ii)
(
₹300
,
₹390
,
₹260
)
(iii)
(
₹390
,
₹260
,
₹300
)
(iv)
(
₹260
,
₹390
,
₹300
)
(v)
(
₹300
,
₹260
,
₹390
)
Question
6
6.
Pipe A can fill a tank in
4
hr
and pipe B can empty the full tank in
16
hr
.
If both the pipes are opened together,
in how much time will the tank become full?
(i)
5
1
5
hr
(ii)
6
hr
(iii)
5
1
3
hr
(iv)
4
2
3
hr
Question
7
7.
A certain number of men can do a work in
21
days
.
If there were
16
men
more
,
it would take
6
days
less
to complete the work.
How many men are required to complete the work in
35
days
?
(i)
22
(ii)
23
(iii)
26
(iv)
25
(v)
24
Question
8
8.
A and B can do a work in
8
days
, B and C can do in
8
days
and C and A can do in
7
days
.
If all three work together,
in how many days will the work be completed?
(i)
5
1
11
days
(ii)
5
1
9
days
(iii)
5
3
11
days
(iv)
4
10
11
days
(v)
5
1
13
days
Question
9
9.
A and B can do a work in
2
1
2
days
,
B and C can do it in
3
1
3
days
and C and A can do it in
3
1
3
days
.
In how much time can
each of them do it seperately?
(i)
(
5
days
,
5
days
,
11
days
)
(ii)
(
6
days
,
5
days
,
10
days
)
(iii)
(
5
days
,
6
days
,
10
days
)
(iv)
(
6
days
,
6
days
,
10
days
)
(v)
(
5
days
,
5
days
,
10
days
)
Question
10
10.
Due to a leak at the bottom, pipe Y takes
7
1
2
hr
to fill the tank.
The leak alone can empty the full tank in
15
hr
.
In what time can pipe Y alone fill the tank when the leak is closed?
(i)
8
hr
(ii)
6
hr
(iii)
3
hr
(iv)
5
hr
(v)
4
hr
Question
11
11.
A can do a work in
4
days
.
With the help of B, A can do the same work in
2
2
9
days
.
In how many days can B alone do the work?
(i)
6
days
(ii)
3
days
(iii)
8
days
(iv)
4
days
(v)
5
days
Question
12
12.
A can do a work in
7
days
and B can do the same work in
9
days
.
If they work together, in how much time is the work completed?
(i)
4
1
16
days
(ii)
3
13
16
days
(iii)
4
1
14
days
(iv)
3
5
6
days
(v)
3
15
16
days
Question
13
13.
A and B can do a piece of work in
12
days
and
11
days
respectively.
They work together for
3
days
and then B leaves.
In how many days the whole work is completed?
(i)
8
6
11
days
(ii)
8
8
9
days
(iii)
8
8
13
days
(iv)
8
8
11
days
(v)
8
10
11
days
Question
14
14.
A, B, C, D, and E can do a piece of work in
9
hr
,
15
hr
,
10
hr
,
7
hr
and
13
hr
respectively.
Who has the greatest capacity to do work?
(i)
E
(ii)
B
(iii)
A
(iv)
C
(v)
D
Question
15
15.
A and B can do a work in
3
days
and
9
days
respectively.
They together undertook to do a piece of work for
₹7200.00
.
What is the share of B?
(i)
₹1800.00
(ii)
₹1799.00
(iii)
₹5398.00
(iv)
₹1801.00
(v)
₹5400.00
Question
16
16.
A, B and C together can do a work in
30
31
days
.
If A and C can do the work in
3
days
and
2
days
respectively,
in how many days can B alone do the work?
(i)
6
days
(ii)
8
days
(iii)
2
days
(iv)
4
days
(v)
5
days
Question
17
17.
A, B, C, D, and E can do a piece of work in
8
days
,
10
days
,
13
days
,
5
days
and
9
days
respectively.
Who has the greatest capacity to do work?
(i)
D
(ii)
B
(iii)
E
(iv)
A
(v)
C
Question
18
18.
A and B together can do a piece of work in
3
11
15
hr
.
They work together for
1
hr
and then A leaves.
B completes the remaining work in
5
1
8
hr
.
In how much time can each of them do the work seperately?
(i)
(
9
hr
,
7
hr
)
(ii)
(
8
hr
,
8
hr
)
(iii)
(
8
hr
,
6
hr
)
(iv)
(
8
hr
,
7
hr
)
(v)
(
7
hr
,
7
hr
)
Question
19
19.
A can do a piece of work in
6
days
,
B can do the work in
10
days
and C in
6
days
respectively.
In how much time can they do it together?
(i)
2
6
13
days
(ii)
2
4
13
days
(iii)
2
4
11
days
(iv)
2
2
13
days
(v)
2
4
15
days
Question
20
20.
5
men can do a work in
14
days working
8
hours a day.
In how many days can
13
men do the same work, working
4
hours a day?
(i)
10
12
13
days
(ii)
10
8
13
days
(iii)
10
10
11
days
(iv)
10
10
13
days
(v)
10
2
3
days
Question
21
21.
P and Q can do together a piece of work in
3
3
7
days
.
After they have worked together for
2
days
,
P stops.
Q completes the remaining work in
2
1
2
days
.
In how many days can Q alone do the work?
(i)
6
days
(ii)
5
days
(iii)
3
days
(iv)
7
days
(v)
9
days
Question
22
22.
Two pipes can fill a tank in
8
min
and
22
min
respectively.
Both pipes are
opened together and after some time the first pipe is closed and the tank
becomes full in
13
3
4
min
from the time when both pipes are opened.
For how much time was first pipe open?
(i)
3
min
(ii)
6
min
(iii)
2
min
(iv)
4
min
(v)
0
min
Question
23
23.
7
skilled men can do a work in
6
days
.
8
unskilled men can do the same work in
6
days
.
In how many days can
5
skilled and
8
unskilled men do the same work?
(i)
4
1
2
days
(ii)
2
1
2
days
(iii)
3
1
4
days
(iv)
3
1
2
days
(v)
4
days
Question
24
24.
A can do a piece of work in
7
hr
,
B can do the work in
15
hr
and C in
13
hr
respectively.
In how much time can they do it together?
(i)
3
64
131
hr
(ii)
3
192
391
hr
(iii)
3
194
391
hr
(iv)
3
192
389
hr
(v)
3
190
391
hr
Question
25
25.
A and B together can do a piece of work in
4
20
21
days
.
They work together for
2
days
and then A leaves.
B completes the remaining work in
4
10
13
days
.
In how much time can each of them do the work seperately?
(i)
(
12
days
,
8
days
)
(ii)
(
14
days
,
8
days
)
(iii)
(
13
days
,
8
days
)
(iv)
(
13
days
,
7
days
)
(v)
(
13
days
,
9
days
)
Assignment Key
1) (i)
2) (iii)
3) (iii)
4) (v)
5) (v)
6) (iii)
7) (v)
8) (i)
9) (v)
10) (iv)
11) (v)
12) (v)
13) (iv)
14) (v)
15) (i)
16) (v)
17) (i)
18) (iv)
19) (ii)
20) (iv)
21) (i)
22) (i)
23) (iv)
24) (ii)
25) (iii)
