Basic Percents
45% of what number is 180
400
A book sold for $145 dollars last year. Now the book sells for $160. What is the percent markup (increase) from last year, to the nearest tenth of a percent?
10.3%
A gutter is supposed to be 50 meters long. The worker cut the gutter and found it measured 48 meters. Enter the percent error of the length of the gutter.
4%
A red bike costs $125 and the price is marked up 8%. A blue bike costs $150 and the price is marked down 8%.
Enter the difference in the prices of the bikes including the markup and markdown.
$3.00
You walk half of a mile in one-tenth of an hour. How many miles did you walk in an hour?
5 miles
10.78 is what percent of 28?
38.5%
A toy was $150 before the holidays and $120 after the holidays. Enter the percent discount for the toy.
20%
The bleachers are supposed to hold 5,000 pounds. The bleachers are tested and held 5,400 pounds. Enter the percent error.
8%
Company A normally makes 120 toys a day. They increase the number of toys made by 15%. Company B normally makes 72 toys a day and they increase the number of toys made by 25%. Enter the difference in the number of toys made after the adjustment.
48 Toys
A novelist can write 2 1/4 pages in 3/4 hour. Express her writing speed as a unit rate
3 pages per hour
0.1 is what percent of 50?
0.2%
There was a bidding war on Ebay. A toy was originally listed at $20, but sold for $50. Enter the percent increase of the toy.
150%
Steph needed 8 meters of lumber. The lumber was cut to a length of 7.96 meters. Enter the percent error.
0.5%
In the winter, Reba sells 120 hot dogs a day. Also during the winter, Mort sells 100 hot dogs a day. During the summer, Reba’s sales decrease by 10%, while Mort’s sales increase by 20%. Enter the total number of hot dogs sold in the summer.
228 Hotdogs
Jeremy can jog 1 1/3 miles in 1/4 hour. Compute his average speed in miles per hour.
5 1/3 miles per hour
130% of what number is 26?
20
A toy store buys a doll for $24. The store then sells the doll for $30. Enter the percent markup.
The winds were estimated at 8 miles per hour, but were actually blowing at 10 miles per hour. Enter the percent error.
20%
Roger has 50 comic books in his collection and he got 10 more. Tom has 60 comic books in his collection and he sold 10% of his books. Enter the total number of comics in their combined collections.
114 Comic Books
Red car (23 1/5 miles per gallon)
19% of 45 is what number?
8.55
A school had 3,075 students. Now the school has 2,952 students. What is the the percent decrease.
4%
A tech added 1.7 L of water to an aquarium. She was supposed to add 2 L. Enter the percent error of the water.
15%
Jan read 80 books last year. She increased that by 15% this year. Gary read 140 books last year and decreased that by 20% this year. Enter the total number of books read by Jan and Gary both years.
424 Books
For Anthony’s birthday, his mother is making cupcakes for his 12 friends. The recipe calls for 3⅓ cups of flour to make 2 ½ dozen cupcakes. Anthony’s mother only has 1 cup of flour. Does she have enough flour to make cupcakes for all of Anthony’s friends? Explain
No, she would need 1 1/3 cups of flower to make 12 cupcakes