Question

A pipe can a fill a cistern in 9 hours. Due to a leak in the bottom , the cistern is just full in 10 hours . when the cistern is full , in how much time will it be empited by the leak ? ​

Answer 1

Answer:

90 hrs

Step-by-step explanation:

A pipe can fill in 9 hrs work done will be

9

1

Cistern fills up in 10 hrs if there is a leak. So work will be done in

10

1

Time taken to empty the cistern

=

9

1

−

10

1

=

90

10−9

=

90

1

It will be emptied in 90 hrs

Answer 2

$\fbox\pink{A}\fbox\green{N}\fbox\pink{S}\fbox\green{W}\fbox\pink{E}\fbox\green{R}\pink{࿐}$

ʀᴇǫᴜɪʀᴇᴅ ᴀɴsᴡᴇʀ-:

A pipe can fill in $\tt{9}$hrs work done will be $\tt\frac{1}{9}$

Cistern fills up in 10hrs if there is a leak. So work will be done in $\tt\frac{1}{10}$

Time taken to empty the cistern

$\pink\longrightarrow$= $\tt\frac{1}{9}$-$\tt\frac{1}{10}$

$\pink\longrightarrow$=$\tt\frac{10-9}{90}$

$\pink\longrightarrow$=$\tt\frac{1}{90}$

It will be emptied in $\tt{90}$hrs.

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