Answer:
31 cars
Step-by-step explanation:
Let's set up a proportion to find out how many cars Haydee needs to wash in order to save up $496.
The given ratio is: "For every 5 cars, Haydee earns $80."
Let x be the number of cars she needs to wash to save up $496.
The proportion can be set up as follows:
[tex] \Large\boxed{\boxed{ \dfrac{5}{80} = \dfrac{x}{496}}}[/tex]
Now, cross-multiply to solve for x :
[tex]5 \times 496 = 80 \times x[/tex]
[tex]2480 = 80x[/tex]
Divide both sides by 80 to find x :
[tex]x = \dfrac{2480}{80}[/tex]
[tex]x = 31[/tex]
So, Haydee would need to wash 31 cars to save up $496.
