Question

Stefan sells Jin a bicycle for $149 and a helmet for $19. The total cost for Jin is 140% of what Stefanspent originally to buy the bike and helmet. How much did Stefan spend originally? How much moneydid he make by selling the bicycle and helmet to Jin?Stefan originally spent $0.

Answer 1

Jin spent $149 + $19 = $168

Stefan spent $x

The total cost for Jin is 140% of what Stefan spent originally, that is,

x*1.4 = 168 (to get the 140% of x, you have to multiply it by 1.4)

x = 168/1.4

x = 120

Stefan originally spent $120

Stefan makes $168 - $120 = $48