A Cistern Can Be Filled By A Tap In 3 Hours While It Can Be Emptied B

1.	A Cistern Can Be Filled By A Tap In 3 Hours While It Can Be Emptied By Another Tap In 8 Hours. If Both The Taps Are Opened Simultaneously, Then After How Much Time Will The Cistern Get Filled?
Answer» PART filled by first tap in 11 HOUR =1/3 Part emptied by SECOND tap 11 hour =1/8 Net part filled by both these taps in 11 hour =1/3-1/8=5/24 i.e, the cistern GETS filled in 24/5 HOURS =4.8 hours. Part filled by first tap in 11 hour =1/3 Part emptied by second tap 11 hour =1/8 Net part filled by both these taps in 11 hour =1/3-1/8=5/24 i.e, the cistern gets filled in 24/5 hours =4.8 hours.

A Cistern Can Be Filled By A Tap In 3 Hours While It Can Be Emptied By Another Tap In 8 Hours. If Both The Taps Are Opened Simultaneously, Then After How Much Time Will The Cistern Get Filled?

Answer»

PART filled by first tap in 11 HOUR =1/3

Part emptied by SECOND tap 11 hour =1/8

Net part filled by both these taps in 11 hour

=1/3-1/8=5/24

i.e, the cistern GETS filled in 24/5 HOURS =4.8 hours.

Part filled by first tap in 11 hour =1/3

Part emptied by second tap 11 hour =1/8

Net part filled by both these taps in 11 hour

=1/3-1/8=5/24

i.e, the cistern gets filled in 24/5 hours =4.8 hours.