How to do it i'm super confused

First you would find the difference 162-120=42
Then you would divide 42/120=.35
Then you move the decimal place over 2 to get a percent. 35%
Since the number is getting larger, it would be a 35% increase.
You can double check this by dividing 120 by 100 120/100=1.2
Then you would multiply it by 35 1.2×35=42
120+42=162
35% increase is the correct answer

First you would find the difference 162-120=42
Then you would divide 42/120=.35
Then you move the decimal place over 2 to get a percent. 35%
Since the number is getting larger, it would be a 35% increase.
You can double check this by dividing 120 by 100 120/100=1.2
Then you would multiply it by 35 1.2×35=42
120+42=162
35% increase is the correct answer