RATIOS
PERCENT CHANGE
RATES
PERCENT
ALL QUESTIONS
100

The ratio of red to blue marbles in a bag is 3:5. If there are 15 red marbles, how many blue marbles are there?

What is 25 blue marbles

100

A pair of shorts cost $48.99. If the shorts go on sale for 15% off, what is the new price?

What is 41.64?

100

solve 

48          12

---  =    ------

20            X

What is x =5

100
What is 14% of 98?
What is 13.72?
100
Michelle works 8 hours for $140.00. If he works 19.5 hours, how much will she earn?
What is $341.25?
200

In a classroom, the ratio of boys to girls is 4:3. If there are 12 boys, how many students are in the class? 

What is 21 students

200
At the restaurant the bill is $45.50. If I leave a 15% tip, what is the total cost including tip?
What is $53.33?
200

In a cooking class, each student needs a certain amount of chocolate for a baking project. The rate of chocolate needed per student is 12 grams for every 6 students. If there are 15 students in the cooking class, how many grams of chocolate are needed for all students to complete their baking projects?

What is 30 grams of chocolate

200
35 is what percent of 83? Round to the nearest whole number
What is 42%?
200
Three slices of cheese cake have 4,200 calories. How many calories will 8 slices of the same cheese cake?
What is 9,800 calories?
300

A recipe for a fruit punch requires mixing orange juice, apple juice, and pineapple juice in the ratio 4:3:2. If you have 200mL of orange juice, how much of each type of juice do you need to use?

What is 200mL of orange juice, 150mL apple juice, and 100mL of pineapple juice

300
A computer is on sale for 20% off. If the sale price is $600, what is the original price of the computer?
What is $750
300

Does this form a proportion?

 3                 9

----   and    -----

16               48

What is yes

300

In a class of 23 students, 4 students did not pass the final. What percentage of students did pass?

What is 82.61%

300
Tara got 88% of the questions correct on her test. She answered 44 problems correctly. How many questions were on the test?
What is 50?
400

A map uses the scale 1:30,000, meaning 1 cm on the map represents 30,000 cm in reality. If the distance between two towns on the map is 5 cm, what is the actual distance between the towns in kilometers?

What is 1.5 km

400
Jessie earns 18% commission on all computers that she sells. If she sells $10,000 worth of computers, how much money does she make in commission?
What is $1,800?
400

A printer prints 6 pages per minute. How many pages can it print in 3 hours?

What is 1080

400

Laura paid 80% of the full price for a computer, and ended up paying only $320. What was the original price for the computer?

What is $400
400
The quarterback at Catoctin High School threw 86 passes during the football season. He completed 39 passes. What percent of the passes were completed?
What is 45%
500

In a class, some students prefer playing sports while others enjoy video games. The simplified ratio of students who prefer playing sports to the whole class is 4:9. If 10 students prefer video games, how many students are in the class?

What is 18 students in the class

500
The value of a new iphone is $550, but after a year or two of use the value drops to $300. What is the percent change in the value of an iPhone?
What is 45.5%?
500

A bus travels at a rate of 60 kilometers per hour. How many meters does the bus travel in 15 seconds?

What is 250m

500

Maureen earned 22 out of 25 points on her last math test. What percent did she get on the test?

What is 88%

500
A typist can type 120 words 100 seconds. How long would it take her to type 258 words?
What is 215 seconds?
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