Question

Breanna works in the mall and her hours increase during busy shopping times of the year. Breanna has a plan to save $25 each week for 5 weeks, and then increase that amount by $20 for the next 7 weeks during the busy time, then go back to $25 per week. If Breanna’s plan is to save $540, how many weeks total will she need to save?
a.
11 weeks
b.
16 weeks
c.
22 weeks
d.
23 weeks

Answer 1

First 5 weeks: 5 × $25 = $125
Next 7 weeks: 7 × ($25 + $20) = 7 × $45 = $315
Total after 12 weeks = $125 + $315 = $440
Remaining to reach $540 = $540 − $440 = $100
At $25/week, need $100 ÷ $25 = 4 more weeks

Total weeks = 12 + 4 = 16 weeks. Answer: b.