Answer:
The number of pools clean per hour is 1.5
Step-by-step explanation:
Given as :
The number of pools clean in 8 hours = 12
The number of pools clean in 7.5 hours = 9
Let The number of pools they clean per hours = x
I.e x = [tex]\frac{8}{12}[/tex] + [tex]\frac{7.5}{9}[/tex]
Or, x = [tex]\frac{24+30}{36}[/tex]
Or, x = [tex]\frac{54}{36}[/tex]
∴ x = [tex]\frac{3}{2}[/tex]
I.e x = 1.5
Hence The number of pools clean per hour is 1.5 Answer
