Percent Increase and Decrease with Equations

A pair of designer sneakers was purchased for $120. Since they were purchased, their price has increased by 15%. What is the new price?

Elena’s aunt bought her a $150 savings bond when she was born. When Elena is 20 years old, the bond will have earned 105% in interest. How much will the bond be worth when Elena is 20 years old?

In a video game, Clare scored 50% more points than Tyler. If $$c$$ is the number of points that Clare scored and $$t$$ is the number of points that Tyler scored, which equations are correct? Select all that apply.

Does this question represent a percent INCREASE or a percent DECREASE?

If a population of 5000 increases by 10% in a year, what will be the population after one year?

A car decreases in value by 15% over a year. If it was originally worth $20,000, what is its value after one year?

A population of 500 increases by 10% in a year. What is the new population?

A pair of shoes was marked down 25% from its original price of $80. What is the new price?

A population of 5000 increases by 10% in a year. What is the new population?

A painting cost $4,563 though over a span of 5 years increased by 500%. How much does it cost now?