Finding Percents
If I make 9 out of 12 foul shots. What percent did I make?
9/12 = 75%
If a meal costs $20 and you leave a 10% tip, how much tip do you leave?
20(0.10) = $2
A jacket marked $60 is on sale for 20% off. What is the sale price?
60(0.2) = 12
60 - 12 = $48
A book's price goes from $10 to $12. What is the percent of change? (Is it increase or decrease?)
20% increase
12 - 10 divided by 10
What number is 20% of 50?
10
What is 25% of 64?
0.25(64) = 16
Sales tax is 6%. If you buy a backpack for $35, what is the total cost after tax?
35(0.06) = 2.10
35 + 2.10 = $37.10
A store marks up an item by 25%. If the cost to the store was $24, what is the selling price?
24(0.25) = 6
24 + 6 = $30
A population goes from 2,500 to 2,750. What is the percent increase?
10%
2750 - 2500 divided by 2500
45 is what percent of 60?
75%
In a class, 12 students walk home, 8 take a bus, and 5 are car riders. What percent of students are car riders?
Total = 12 + 8 + 5 = 25
5/25 = 20%
A restaurant bill is $48.50. You want to leave an 18% tip. How much tip should you leave?
48.50(0.18) = $8.73
A pair of shoes originally $80 is now 30% off. What is the amount saved and the sale price?
80(0.3) = $24 saved
80 - 24 = $56 sale price
A store reduces the price of a toy from $50 to $37.50. What is the percent decrease?
25%
50 - 37.50 divided by 50
Write and solve a percent proportion: What is 12% of 250?
12/100 = x/250
12(250) = 100x
3000 = 100x
x = 30
A sweater costs $48. What is 150% of $48?
48(1.5) = $72
An item is $120 before tax. Sales tax is 7.5%. What is the final price after tax?
120(0.075)= 9
120 + 9 = $129
A pack of pencils costs a store $3.50. If they want to markup the price by 75%, what would the selling price be?
3.50(0.75) = 2.63
3.50 + 2.63 = $6.13
The value of a collectible goes from $80 to $60, then later to $90. What is the percent change from $60 to $90?
50%
90 - 60 divided by 60
18 is what percent of 72?
0.25 = 25%
One classroom has 13 boys and 11 girls. Another classroom has 8 boys and 14 girls. What percent of students form the two classes are girls? Round to the nearest tenth of a percent.
0.5434 = 54.3%
A $95 jacket is on sale for 20% off. There is also 6% sales tax. How much will the jacket cost?
95(0.20) = 19
95 - 19 = 76
76(0.06) = 4.56
76 + 4.56 = $80.56
A Hummer costs the deal $57,915. The dealer has a 15% markup. How much would you have to pay to own the Hummer?
57915(0.15) = 8,687.25
57,915 + 8,687.25 = $66,602.25
An item was $200. It first increased by 15% and then decreased by 10% from the new price. What is the final price?
200(0.15) = 30
200 + 30 = 230
230(0.10) = 23
230 - 23 = $207
A student scored 42 out of 50 on a test. Use a percent proportion to find the percent score.