A prom ticket at Smith High School costs $120. Tom plans to save money for the ticket by walking his neighbor's dog for $15 per week. If Tom has already saved $22, what is the minimum number of weeks Tom must walk the dog to earn enough to pay for the prom ticket?
Answer (2)
120 - 22 = 98. 98 / 15 = 6.533333. Because you want the minimum, and he can't get paid during 0.53333 of a week, Tom must walk the dog for a minimum of 7 weeks.
Tom needs to save an additional $98 for the prom ticket after saving $22. He earns $15 per week walking his neighbor's dog, which means he will need to work for a minimum of 7 weeks to reach his goal. Thus, Tom must walk the dog for 7 weeks to afford the ticket.
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