Dave can clean pools at a constant rate of 3/5 pools/hour.
a. what is the ratio of the number of pools to the number of hours?
b. how many pools can dave clean in 10 hours?
c. how long does it take dave to clean 15 pools?

a. 3/5 pools per hour.

b. 6 pools

c. 25 hours  

Step-by-step explanation:

Hi, the answers are.

The ratio of the number of pools to the number of hours is already given in the question. Is 3/5 pools per hour.

Ratio = number of pools/ time

b. We have to multiply the ratio by 10 hours.  

3/5 pools/hour x 10 hours = 6 pools

c. we have to divide the number of pools (15) by the ratio

15 pools /3/5 pools/hour = 25 hours  

Feel free to ask for more if needed or if you did not understand something.

a is 8.b is 10.c is 10.5. d is -.5

step-by-step explanation:

just minus the smallest number from the biggest.