Answer:
The new price of sneakers is the sum of the increase in the purchase price and the initial price. Hence, the new price is $138
The initial price of sneakers = $120
Percentage increase in price of sneakers = 15%
The new price of the sneakers can be calculated thus :
Initial price + price increase
Price increase = 15% × initial price
Price increase = 0.15 × $120 = $18
The new price of sneakers = $120 + $18 = $138
Therefore, the new price of sneakers is $138.