Gentry assembled a new 24 foot round pool in her backyard.  To fill the pool with water, she used four hoses.  Two of the hoses each deliver water at a rate of 2 gallons per minute.  The other two hoses each deliver water at a rate of 3 gallons per minute.  With a volume of 15,000 gallons, how many hours will it take to fill the pool?
Each of the two hoses delivers water at a rate of 2 gallons per minute, for a combined total of 2*2=
<gadget id="calculator">2*2</gadget>
<output>4</output>
4 gallons of water per minute.
The other two hoses each deliver water at a rate of 3 gallons per minute, for a combined total of 2*3=
<gadget id="calculator">2*3</gadget>
<output>6</output>
6 gallons of water per minute.
Thus, all four hoses deliver a combined total of 4+6=
<gadget id="calculator">4+6</gadget>
<output>10</output>
10 gallons of water per minute.
With a volume of 15,000 gallons, it would take 15,000/10=
<gadget id="calculator">15000/10</gadget>
<output>1_500</output>
1500 minutes to fill the pool.
Converting to hours, it will take 1500/60=
<gadget id="calculator">1500/60</gadget>
<output>25</output>
25 hours to fill the pool.

<result>25</result>