Tuesday

July 29, 2014

July 29, 2014

Posted by **NEED HELP NOW!!** on Friday, February 22, 2013 at 6:41pm.

Just need an equation.

Thank you!

- Algebra 1 -
**drwls**, Saturday, February 23, 2013 at 8:52amLet tank volume = V in gallons

First pipe fill rate = Q1 = V/12 g.p.m

Second pipe fill rate = Q2 = V/10 g.p.m

Let Q3 = third pipe fill rate in gallons/min

4 minutes = V/(Q1 + Q2 + Q3)

= V/(V/12 + V/10 + Q3).

= 1/(1/12 + 1/10 + Q3/V)

1/3 + 2/5 + 4 Q3/V = 1

4 Q3/V = 4/15

Q3/V = 1/15

Fill time with pipe 3 alone = V/Q3 = 15 minutes

**Related Questions**

Algebra 1 - The first of three pipes fills a tank in 12 minutes and a second ...

maths - A water tank can be filled up by two pipes together in 30 minutes. One ...

Math - Pipes A & B can fill a storage tank in 8hours and 12 hours, respectively...

Algebra - Two pipes fill a storage tank in 9 hours. If the larger pipe fills the...

Math - One pipe fills a tank in 1 hour while another pipe can fill the same tank...

college algebra - water from a tank is being used for irrigation while the tank ...

Fluid Mechanics - Water flows into a cylindrical tank through pipe 1 at a rate ...

math - A tank fitted with two pipes is to filled with water. One pipe can fill ...

Math - a bathtub can be filled by the hot and cold water pipes in four minutes ...

math - a bathtub can be filled by the hot and cold water pipes in four minutes ...