Question

Marcus just got a summer job as acashier making $8.50 an hour andhas already saved $50. If he wantsto earn at least $475 for a newcomputer, how many hours musthe work? Write an inequality andsolve.

Answer 1

Marcus's hourly income = $8.50

Amount that has already been saved by Marcus = $50

If Marcus wants to earn at least $475 for a new computer:

Let the amount of hours he will work to earn $475 = t

Since he earns $8.50 hourly and he already saved $475, the inequality will be of the form:

50 + 8.50t ≥ 475

8.50t ≥ 475 - 50

8.50t ≥ 425

t ≥ 425 / 8.50

t ≥ 50

Marcus must work for at least 50 hours