Question

A video game that usually costs $30.65 is marked down 60%. Kelvin determined that the new price of the game would be $18.39. Look at Kelvin’s work and find his error.

($30.65)(0.60) = $18.39

Answer 1

using the rule of 3 simple

30,65 mean 100%
x mean 60%

x = 30,65 *60/100 = 18,39

so from this result what ?

Answer 2

so after you get the 60% of the costs of the video game to get the new price what you need to do with this 60% of the costs what you ve got ?