Suppose that a store is adjusting the prices of several item

Suppose that a store is adjusting the prices of several items. For each price change, do the following: i. State the percent change. ii. State the number by which we can multiply the old price to find the new price. iii. Find the new price of the item.

a. A pint of blueberries used to cost $ 2.20 and the store increased the price by 59 %.

i. Percent change:

ii. The number we can multiply the original price to find the new price:

iii. The new price of a pint of blueberries:

b. A frozen pizza used to cost $ 4.30 and the store increased the price by 119 %.

i. Percent change:

ii. The number we can multiply the old price to find the new price:

iii. The new price of a frozen pizza:

c. A dozen eggs used to cost $ 2.60 and the store decreased the price by 14 %.

i. Percent change:

ii. The number we can multiply the original price to find the new price:

iii. The new price of a dozen eggs:

d. A gallon of laundry detergent used to cost $14.96 and the store decreased the price by 33 %.

i. Percent change:

ii. The number we can multiply the original price to find the new price:

iii. The new price of a gallon of laundry detergent:

Solution

a. A pint of blueberries used to cost $ 2.20 and the store increased the price by 59 %.

i. Percent change: 59

ii. The number we can multiply the original price to find the new price:1+(59/100)=1+0.59 =1.59

iii. The new price of a pint of blueberries: 2.2*1.59=3.498$

b. A frozen pizza used to cost $ 4.30 and the store increased the price by 119 %.

i. Percent change: 119

ii. The number we can multiply the old price to find the new price:1+(119/100)=1+1.19=2.19

iii. The new price of a frozen pizza: 4.3*2.19=9.417

c. A dozen eggs used to cost $ 2.60 and the store decreased the price by 14 %.

i. Percent change: 14

ii. The number we can multiply the original price to find the new price:1-(14/100)= 1-0.14=0.86

iii. The new price of a dozen eggs: 2.6*0.86=2.236

d. A gallon of laundry detergent used to cost $14.96 and the store decreased the price by 33 %.

i. Percent change: 33

ii. The number we can multiply the original price to find the new price:1-(33/100) 1-0.33=0.67

iii. The new price of a gallon of laundry detergent: 14.96*(0.67)=10.0232