Question

Pipes a and b can fill a tank in 9 hours and 12 hours respectively. both pipes are opened together to fill the tank but pipe b is closed after sometimes. if the tank is full in 6 hours altogether after how many hours was pipe b closed

Answer 1

the pipe b was closed for 6 hours

Answer 2

Answer:

After 4 hours, the B pipe was shut down.

Step-by-step explanation:

Assume that the tank's total volume is 36 units (LCM of 12 and 9)

As a result, A can finish 4 units in 1 hour. And B can fill three units in one hour.

Assume B was closed after T hours.

As a result, A was open for 6 hours and B was open for T hours.

4*6 + 3*T = 36

4 hours = T

After 4 hours, the B pipe was shut down.

One calorie is the amount of heat energy required to raise the temperature of one gramme of water by one degree Celsius at one atmosphere of pressure. One calorie is the amount of heat energy required to raise the temperature of one gramme of water by one degree Celsius at one atmosphere of pressure.

#SPJ6