Percents

Percent of Increase

100

The class size went from 16 students to 20 students.

25% increase

200

My stamp collection went from 100 to 200.

100% increase

300

The dog went from 25 pounds to 40 pounds.

60% increase

Percent of Decrease

100

The student population went from 180 to 120.

33.3% decrease

200

The man went from 200 pounds to 165 pounds.

17.5% decrease

300

I was driving 80 miles an hour and now I am driving 40 miles an hour.

50% decrease

Mark Up

100

The book was $10 and marked up by 25%. Find the mark up.

$2.50

200

The laptop is $350 and marked up 35%. Find the mark up.

$122.50

300

The car is $25,000 and is marked up 85%. Find the mark up.

$21,250

Mark Down

100

The shoes are $45 and marked down 10%. Find the mark down.

$4.50

200

The desk is $275 and marked down 30%. Find the mark down.

$82.50

300

The house is $450,000 and marked down 15%. Find the mark down.

$67,500

Using Percent of Change

100

The shirt is $28. The mark down is 15%. What is the new price?

$23.80

200

The skateboard is $90. It is marked up 20%. What is the new price?

$108

300

The car is $45,000. It is marked down 30%. What is the new price?

$31,500