EduSahara™ Assignment
Name : Pipe Problems
Chapter : Direct and Inverse Proportions
Grade : SSC Grade VIII
License : Non Commercial Use
Question
1
1.
Pipe A can fill a tank in
8
hr
and pipe B can empty the full tank in
40
hr
.
If both the pipes are opened together,
in how much time will the tank become full?
(i)
8
hr
(ii)
13
hr
(iii)
9
hr
(iv)
11
hr
(v)
10
hr
Question
2
2.
Two pipes can fill a tank in
9
min
and
19
min
respectively.
Both pipes are
opened together and after some time the first pipe is closed and the tank
becomes full in
16
8
9
min
from the time when both pipes are opened.
For how much time was first pipe open?
(i)
0
min
(ii)
1
min
(iii)
-2
min
(iv)
3
min
(v)
2
min
Question
3
3.
Due to a leak at the bottom, pipe Y takes
5
5
6
hr
to fill the tank.
The leak alone can empty the full tank in
35
hr
.
In what time can pipe Y alone fill the tank when the leak is closed?
(i)
7
hr
(ii)
5
hr
(iii)
3
hr
(iv)
6
hr
(v)
4
hr
Question
4
4.
Pipe A can fill a tank in
2
hr
and pipe B can empty the full tank in
14
hr
.
If both the pipes are opened together,
in how much time will the tank become full?
(i)
2
1
5
hr
(ii)
2
1
3
hr
(iii)
1
2
3
hr
(iv)
3
hr
Question
5
5.
Two pipes can fill a tank in
15
min
and
30
min
respectively.
Both pipes are
opened together and after some time the first pipe is closed and the tank
becomes full in
16
min
from the time when both pipes are opened.
For how much time was first pipe open?
(i)
5
min
(ii)
9
min
(iii)
7
min
(iv)
8
min
(v)
6
min
Question
6
6.
Due to a leak at the bottom, pipe Y takes
10
1
2
hr
to fill the tank.
The leak alone can empty the full tank in
21
hr
.
In what time can pipe Y alone fill the tank when the leak is closed?
(i)
7
hr
(ii)
9
hr
(iii)
8
hr
(iv)
5
hr
(v)
6
hr
Question
7
7.
Pipe A can fill a tank in
8
hr
and pipe B can empty the full tank in
24
hr
.
If both the pipes are opened together,
in how much time will the tank become full?
(i)
13
hr
(ii)
9
hr
(iii)
14
hr
(iv)
12
hr
(v)
11
hr
Question
8
8.
Two pipes can fill a tank in
12
min
and
27
min
respectively.
Both pipes are
opened together and after some time the first pipe is closed and the tank
becomes full in
24
3
4
min
from the time when both pipes are opened.
For how much time was first pipe open?
(i)
0
min
(ii)
3
min
(iii)
2
min
(iv)
1
min
(v)
-2
min
Question
9
9.
Due to a leak at the bottom, pipe Y takes
10
hr
to fill the tank.
The leak alone can empty the full tank in
40
hr
.
In what time can pipe Y alone fill the tank when the leak is closed?
(i)
7
hr
(ii)
10
hr
(iii)
5
hr
(iv)
9
hr
(v)
8
hr
Question
10
10.
Pipe A can fill a tank in
7
hr
and pipe B can empty the full tank in
42
hr
.
If both the pipes are opened together,
in how much time will the tank become full?
(i)
8
4
5
hr
(ii)
8
2
5
hr
(iii)
8
hr
(iv)
8
2
3
hr
(v)
8
2
7
hr
Assignment Key
1) (v)
2) (ii)
3) (ii)
4) (ii)
5) (iii)
6) (i)
7) (iv)
8) (iv)
9) (v)
10) (ii)
