Question

Four friends want to take a vacation together, so each one gets a part-time job. Each person has 8 weeks to save $720 for the vacation. Analyze the four individual plans below and decide which of the four people will reach his or her goal of saving $720 for vacation.
Friend A: Works 13 hours per week at $6.95 per hour.
Friend B: Works 15 hours per week at $5.85 per hour.
Friend C: Works 18 hours per week at $5.25 per hour.
Friend D: Works 11 hours per week at $7.80 per hour.
a.
A and C
b.
A and D
c.
B and C
d.
B and D

Answer 1

Compute each person's 8-week total = (hours/week × $/hour) × 8.

- A: 13 × 6.95 = 90.35 per week → 90.35 × 8 = 722.80 (≥720)
- B: 15 × 5.85 = 87.75 per week → 87.75 × 8 = 702.00 (<720)
- C: 18 × 5.25 = 94.50 per week → 94.50 × 8 = 756.00 (≥720)
- D: 11 × 7.80 = 85.80 per week → 85.80 × 8 = 686.40 (<720)

So A and C will reach $720. Answer: a.