Question

Mary wants to buy a new tennis racket that cost $57.50. She has $8 and plans to save $4.50 each week. How many weeks will it take her to save the money? *

24 weeks
15 weeks
11 weeks
10 weeks

Answer 1

11 weeks

Explanation:

We know she has $8 already and needs to reach $57.50, so we can remove $8 from the total. then we just need to divive the remaining amount by her weekly payment.

57.50 - 8 = 49.50

49.50 / 4.50 = 11

Answer 2

11 weeks

Explanation:

57.5=8+4.5x

49.5=4.5x

11 = x