Michael Reeves, an ice cream vendor, pays $17.50 for a five-gallon container of premium ice cream. From this quantity he sells 80 scoops at $0.90 per scoop. If he sold smaller scoops, he could sell 98 scoops from the same container; however, he could charge only $0.80 per scoop. If Michael switches to the smaller scoops, by how much will his profit per container go up or down? (Profit = Sales – Expenses)

*word your answer to include "increase" or "decrease." For example, write "$47.35 increase"

Using your answer from the questions above, by what percent will the profit change? (Round to the nearest tenth of a percent.)
*word your answer to include "increase" or "decrease." For example, write "25.5% decrease�

1 answer

80 scoops * .90 = $72 income for big scoops

98 * .80 = $78.40 income for little scoops

difference = $6.40 increase

original profit = 72-17.5 = 54.50
final profit = 78.40 - 17.50 = 60.90

100 * difference / original = 100*6.4/54.5
= 11.7 % increase in profit