2.7 – Percent of Change

Percent Change: Change = x _ Original 100

Percent Change: Change = x _ Original 100 Ex. 1 Determine whether each percent of change is a percent of increase or decrease. Then find the percent of change. a) Original: 20 New: 23

Ex. 1 Determine whether each percent of change is a percent of increase or decrease. Then find the percent of change. a) Original: 20 New: 23 Change = x _ Original 100

Ex. 1 Determine whether each percent of change is a percent of increase or decrease. Then find the percent of change. a) Original: 20 New: 23 Change = x _ Original = x _

Ex. 1 Determine whether each percent of change is a percent of increase or decrease. Then find the percent of change. a) Original: 20 New: 23 Change = x _ Original = x _

Ex. 1 Determine whether each percent of change is a percent of increase or decrease. Then find the percent of change. a) Original: 20 New: 23 Change = x _ Original = x _ x =

Ex. 1 Determine whether each percent of change is a percent of increase or decrease. Then find the percent of change. a) Original: 20 New: 23 Change = x _ Original = x _ x = 300

Ex. 1 Determine whether each percent of change is a percent of increase or decrease. Then find the percent of change. a) Original: 20 New: 23 Change = x _ Original = x _ x =

Ex. 1 Determine whether each percent of change is a percent of increase or decrease. Then find the percent of change. a) Original: 20 New: 23 Change = x _ Original = x _ x = x = 15; New greater than Orig., so INC

Ex. 1 Determine whether each percent of change is a percent of increase or decrease. Then find the percent of change. a) Original: 25 New: 17

Ex. 1 Determine whether each percent of change is a percent of increase or decrease. Then find the percent of change. a) Original: 25 New: 17 Change = x _ Original = x _ x = x = 32; New less than Orig., so DEC

Ex. 2 Marta is purchasing wire and beads to make jewelry. Her merchandise is $ If the tax is 7.25%, what is the total cost?

Total Cost = Price + Tax of Price

Ex. 2 Marta is purchasing wire and beads to make jewelry. Her merchandise is $ If the tax is 7.25%, what is the total cost? Total Cost = Price + Tax of Price T = $ %($28.62)

Ex. 2 Marta is purchasing wire and beads to make jewelry. Her merchandise is $ If the tax is 7.25%, what is the total cost? Total Cost = Price + Tax of Price T = $ %($28.62) T = (28.62)

Ex. 2 Marta is purchasing wire and beads to make jewelry. Her merchandise is $ If the tax is 7.25%, what is the total cost? Total Cost = Price + Tax of Price T = $ %($28.62) T = (28.62) T =

Ex. 2 Marta is purchasing wire and beads to make jewelry. Her merchandise is $ If the tax is 7.25%, what is the total cost? Total Cost = Price + Tax of Price T = $ %($28.62) T = (28.62) T = T =

Ex. 2 Marta is purchasing wire and beads to make jewelry. Her merchandise is $ If the tax is 7.25%, what is the total cost? Total Cost = Price + Tax of Price T = $ %($28.62) T = (28.62) T = T = T = $30.69

Ex. 3 Marta is purchasing a pair of jeans. The jeans cost $85. If they are on sale for 20% off, what is the total cost?

Total Cost = Price – Discount of Price

Ex. 3 Marta is purchasing a pair of jeans. The jeans cost $85. If they are on sale for 20% off, what is the total cost? Total Cost = Price – Discount of Price T = $85 – 20%($85) T = 85 – 0.2(85) T = 85 – 17 T = 68 T = $68