Question

Tom wants to buy items costing $25.35, $50.69, and $85.96. He earns $6.50 an hour doing odd jobs. If ten percent of his income is put aside for other purposes, how many hours must he work to earn the money he needs for his purchases? Round your answer to the nearest whole hour.

Answer 1

Let y be the number of hours he must work.
90/100x6.5y=25.35 + 50.69 + 85.96
y= 27.69
y= 28 hours