Question

Kendra charges $11 to shovel a driveway. She shoveled 4 driveways on Saturday and then some more on Sunday. She made $143 for the weekend. How many driveways did she shovel on Sunday?

Answer 1

For this case, the first thing we must do is define a variable.
We have then:
x: amount of driveways shoveled on Sunday
y: total amount
We now write the equation that models the problem:

`y = 11x + 44`
She made $ 143 for the weekend:

`143 = 11x + 44`
From here, we clear the value of x:

`11x = 143 - 44 x = 99/11 x = 9`
Answer:
She shoveled 9 driveways on Sunday