Answer:
Stefan originally spent $110.
Stefan made a profit of $44.
Step-by-step explanation:
Given that:
Stefan sold the bike and helmet for $137 and $17
Total amount = 137+17 = $154
This is 140% of the price Stefan originally paid.
Let,
x be the original price paid by Stefan
140% of x = $154
![\frac{140}{100}x=154\\1.4x = 154\\\frac{1.4x}{1.4}=\frac{154}{1.4}\\x=110](https://tex.z-dn.net/?f=%5Cfrac%7B140%7D%7B100%7Dx%3D154%5C%5C1.4x%20%3D%20154%5C%5C%5Cfrac%7B1.4x%7D%7B1.4%7D%3D%5Cfrac%7B154%7D%7B1.4%7D%5C%5Cx%3D110)
Therefore,
Stefan originally paid $110 for the bicycle and helmet.
Profit made by Stefan = 154-110 = $44
Hence,
Stefan originally spent $110.
Stefan made a profit of $44.