Question

You earn $35 for washing 7 cars.

a. How much do you earn for washing 4 cars?

You earn for washing 4 cars.

Question 2
b. You earn $45. How many cars did you wash?

Answer 1

You earn 20$ for washing 4 cars.

You washed 9 cars to get 45$.

Hope this helps!

Explanation:

If you earned 35$ for washing 7 cars, one car is 5$ ( 35 ÷ 7 ).

If one car is 5$, 4 cars is 20$ ( 5 * 4 ).

Because one car is 5$, the 45$ is 9 cars ( 45 ÷ 5 ) or ( 9 * 5 ).