Question

Cara's car wash washed 52 cars in 4 hours.at this rate how many cars did they wash in 9 hours

Answer 1

Given:

a.) 52 cars in 4 hours.

Let's determine how many cars did they wash in 9 hours​ using ratios and proportions.

We get,

`\text{ 52 cars : 4 hours = x : 9 hours }\rightarrow\text{ }\frac{\text{ 52 cars}}{\text{ 4 hours}}\text{ = }\frac{x}{\text{ 9 hours}}`
`\frac{\text{ 52 cars x 9 (hours)}}{\text{ 4 (hours)}}\text{ = }x`
`\text{ }\frac{468\text{ cars}}{4}\text{ = x}`
`\text{ 117 cars = x}`

Therefore, they can wash 117 cars in 9 hours.