Friday

August 29, 2014

August 29, 2014

Posted by **Jay** on Monday, July 13, 2009 at 3:41pm.

- Math -
**Marth**, Monday, July 13, 2009 at 3:51pmStephanie cleans at the rate of 1 pools/hr.

Mark cleans at the rate of 1/1.5, or 2/3 pools/hr.

Their combined rate is 5/3 pools/hr

If r is the rate, t is time, and p is the number of pools, then

r = p/t

(5/3pools/hr) = (1 pool)/t

t = 3/5hr

t = 60*3/5 = 36min

**Related Questions**

Algebra II - John can clean an attic in 11 hours. DeShawn can clean the same ...

algebra - Pump A can fill a swimming pool in 6 hours and pump B can fill the ...

math - Three water pipes are used to fill a swimming pool. The 1st pipe alone ...

math - a pool is filled with water in 6 hours at 100 m every hour. If 125 m ...

math - Mary can clean the house in 6 hours. Her younger sister Ruth can do the ...

Pre Calc - A swimming pool can be filled by a vent in 10 hours. When the pool is...

math - A pool of water with surface area of 0.6 hectares has a uniform depth of ...

College Math - An inlet pipe on a swimming pool can be used to fill the pool in ...

MATH - An inlet pipe can fill an empty pool in 3 hours. Another pipe can fill ...

math - An inlet pipe on a swimming pool can be used to fill the pool in 28 hours...