Answer:
6
Explanation:
this is because
if one car=$15
then how many cars would be=$90.
this will result us in ratio and proportion
if more then less divide ,
and we will get
90\15 × 1= 6
therefore Jake wash 6 cars for $90
6 cars
Each car wash=15$
Jake raised 90$, so the amount of cars he washed would be 90/15=6
Hope this helps!
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