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Byju's Answer
Standard VIII
Mathematics
Relation for Inverse Proportion
Four pipes ca...
Question
Four pipes can fill a tank in
70
min. How long will it take to fill the tank by
7
pipes?
A
20
m
i
n
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B
35
m
i
n
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C
40
m
i
n
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D
None of these
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Solution
The correct option is
C
40
m
i
n
By the principle of inverse proportion
4
×
70
=
7
×
x
⇒
x
=
4
×
70
7
=
40
m
i
n
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