23.7k views
5 votes
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?

User Tenstan
by
6.9k points

1 Answer

2 votes

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.

User Kongsea
by
7.2k points