IM 7.4.8 Practice: 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 [math]c[/math] is the number of points that Clare scored and [math]t[/math] is the number of points that Tyler scored, which equations are correct? Select [b]all[/b] that apply.

[math]c=1.5t[/math] [math]c=t+0.5[/math] [math]c=t+50[/math] [math]c=\left(1+0.5\right)t[/math] [math]c=t+0.5t[/math]

Draw a diagram to represent the situation: The number of miles driven this month was a 30% decrease of the number of miles driven last month.

Draw a diagram to represent the situation: The amount of paper that the copy shop used this month was a 25% increase of the amount of paper they used last month.

Which decimal is the best estimate of the fraction [math]\frac{29}{40}[/math]?

0.8 0.5 0.6 0.7

Could 7.2 inches and 28 inches be the diameter and circumference of the same circle? Explain why or why not.

Information: IM 7.4.8 Practice: Percent Increase and Decrease with Equations