# A tank is supplied by two pipes A and B and emptied by a third pipe C

**Situation**

A tank is supplied by two pipes *A* and *B* and emptied by a third pipe *C*. If the tank is initially empty and all pipes are opened, the tank can be filled in 20 hours. If the tank is initially full and *A* and *C* are opened, the tank can be emptied in 4 hours. If the tank is initially full and *B* and *C* are opened, the tank can be emptied in 2 hours. Pipe *A* supplies 50 liters per minute more than *B*.

1. Find the rate of pipe *A* in liters per minute.

A. 120 | C. 110 |

B. 130 | D. 140 |

2. Find the rate of pipe *C* in liters per minute.

A. 170 | C. 150 |

B. 160 | D. 140 |

3. Find the capacity of the tank in liters.

A. 12,000 | C. 11,500 |

B. 12,500 | D. 13,000 |