Answer:
21.6 is the payment amount from mom to Emily
Step-by-step explanation:
Proportion
Payment / unit distance = total payment/total distance
Givens
Solution
0.9/0.75 = x / 18 Multiply both sides by 18
0.9 * 18/0.75 = x * 18/18 Simplify.
16.2 / 0.75 = x Simply the left
21.60 = x