Question

Stefan sells Jin a bicycle for ​$126 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?
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Answer 1

Answer:

Stefan originally spent $110

Stefen made $33 by selling the bicycle and helmet to jin.

Step-by-step explanation:

let ,

the original cost of bicycle and helmet for Stefan be 'x'

now,

total cost for Jin of bicycle and helmet = 126 + 17

                                                        = 143

also, total cost for Jin = 130% of original cost for Stefan

⇒ 143 = $(\frac{130}{100} )x$

⇒ x = 110.

hence,

profit made by Stefan = total cost for Jin - original cost for Stefan

                                     = 143 - 110

                                     = 33