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Class VI
Class VII
Class VIII
Class IX
Class X
ICSE Grade VII - Time and Work
Question
1
1.
A can do a work in
2
days
.
With the help of B, A can do the same work in
1
1
5
days
.
In how many days can B alone do the work?
0
days
5
days
4
days
3
days
2
days
Question
2
2.
3
skilled men can do a work in
3
days
.
5
unskilled men can do the same work in
6
days
.
In how many days can
8
skilled and
2
unskilled men do the same work?
1
2
45
days
1
2
43
days
1
4
43
days
1
day
1
2
41
days
Question
3
3.
14
men can do a work in
19
days working
5
hours a day.
In how many days can
20
men do the same work, working
8
hours a day?
8
5
18
days
8
5
16
days
8
3
16
days
8
5
14
days
8
7
16
days
Question
4
4.
A and B can do a work in
4
19
20
days
,
B and C can do it in
4
14
19
days
and C and A can do it in
5
5
21
days
.
In how much time can
each of them do it seperately?
(
12
days
,
10
days
,
10
days
)
(
11
days
,
9
days
,
10
days
)
(
11
days
,
9
days
,
11
days
)
(
12
days
,
9
days
,
10
days
)
(
11
days
,
10
days
,
10
days
)
Question
5
5.
A, B, C, D, and E can do a piece of work in
13
days
,
12
days
,
5
days
,
11
days
and
8
days
respectively.
Who has the greatest capacity to do work?
B
C
A
E
D
Question
6
6.
A and B can do a piece of work in
15
days
and
11
days
respectively.
They work together for
2
days
and then B leaves.
In how many days the whole work is completed?
12
3
13
days
12
1
11
days
12
3
11
days
12
1
3
days
12
5
11
days
Question
7
7.
2
men take
8
days
to complete a work.
How much work is done by one man in one day?
3
16
1
8
1
16
(
-1
16
)
1
2
Question
8
8.
A certain number of men can do a work in
36
days
.
If there were
12
men
more
,
it would take
18
days
less
to complete the work.
How many men are required to complete the work in
8
days
?
55
52
54
53
57
Question
9
9.
A and B can do a work in
9
days
and
2
days
respectively.
They together undertook to do a piece of work for
₹2200.00
.
What is the share of B?
₹1799.00
₹400.00
₹1801.00
₹398.00
₹1800.00
Question
10
10.
Pipe A can fill a tank in
9
hr
and pipe B can empty the full tank in
63
hr
.
If both the pipes are opened together,
in how much time will the tank become full?
11
hr
9
1
2
hr
11
1
2
hr
10
1
4
hr
10
1
2
hr
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