Question

Stefan sells Jin a bicycle for ​$139 and a helmet for ​$17 The total cost for Jin is ​%130 of what Stefan spent originally to buy the bike and helmet. How much did Stefan spend​ originally? How much money did he make by selling the bicycle and helmet to​ Jin?

Answer 1

Answer: Spent $120 originally, profited by $36

Explanation:

The total cost Stefan earned from selling the helmet and the bicycle is $139 + $17 = $156.

130% can be rewritten as
`(130)/(100)` which is simplified to 1.3.

Set up and this equation to find 130% of this price.

`1.3x = 156\\x = 120`

Stefan spent $120 on these items.

Subtract this value from the selling price and solve.

`156-120 = 36`

Stefan made $36 from selling the helmet and bicycle.