Unit 4 Quiz 2 Percent of Increase and Decrease

Mrs. Pitts bought x pounds of oranges and Mrs. Johnson bought 25% less. Write the equation in simplest form and in decimal form.

• y = 0.75

• y = 0.75x

• y = x - 25%

• y = x - .25x

I ran x meters and Dan ran 25% more. Write the equation in simplest form and in decimal form.

• y = x + 25%

• y = 25%x

• y = x + 0.25

• y = 1.25x

The cereal box has 20 ounces of cereal in it. The new box has 25% more. How many ounces are in the new box?

• 15 ounces

• 20 ounces

• 25 ounces

• 45 ounces

The hat I want is $18. It is on sale for 10% off. How much is the hat now?

• $16.20

• $19.80

• $8.00

• $16.02

The school had 450 8th grade students last year. This year the number of 8th graders increased by 20%. How many 8th graders are there this year.

• 400 students

• 540 students

• 470 students

• 900 students

John ran 5 miles and Sean ran for 20% less. How many miles did Sean run for?

• 6 miles

• 3 miles

• 4.5 miles

• 4 miles

Elizabeth texted 300 words in the time given. Sara typed 15% more. How many words did Sara text?

• 345 words

• 315 words

• 350 words

• 255 words

The turtle population at the sanctuary last year was 400. The population decreased by 20% this year. How many turtles were there this year?

• 420 turtles

• 480 turtles

• 380 turtles

• 320 turtles

Erin read for 20 minutes and Lynn read for 30% more. How long did Erin read for?

• 26 minutes

• 50 minutes

• 14 minutes

• 30 minutes

The $35 shirt was marked up by 20%. What is the price of the new shirt?

• $55

• $28

• $42

• $35.20