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IM: 7.4.8: Percent Increase and Decrease with Equations (Practice)

Last updated over 1 year ago

7 Nsɛmmisa

1

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1.

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

1

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2.

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?

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1

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3.

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.

c=1.5t

c=t+0.5

c=t+0.5t

c=t+50

c=(1+0.5)t

Draw a diagram to represent each situation:

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4.

The number of miles driven this month was a 30% decrease of the number of miles driven last month.

1

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5.

The amount of paper that the copy shop used this month was a 25% increase of the amount of paper they used last month.

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6.

Which decimal is the best estimate of the fraction \frac{29}{40}?

0.5

0.6

0.7

0.8

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7.

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