Question

tell me the answer of 5th no. question

Answer 1

Answer:

Step-by-step explanation:

Part filled without leak in 1 hour = 1/9

Part filled with leak in 1 hour = 1/10

Work done by leak in 1 hour

= {1}/{9} - {1}/{10}

= {1}\{90}

We used subtraction as it is getting empty.

So total time to empty the cistern is 90 hours