Math exam
The volleyball team needs new uniforms. The students plan to sell plush toy bears (the school mascot) for $5 each. The students find three companies on-line that sell stuffed mascots. Company A sells 12 bears for $33.12. Company B sells 15 bears for $41.85. Company C charges $44.48 for 16 bears. Which company has the best buy?
Company A has the best buy.
Your teacher asks, "36% of what number is 9?" You know to write 36% as the ratio 36 /100 How could you find an equivalent ratio with numerator 9? 36% of what number is 9?
Divide the numerator and denominator by 4. 36% of 25 is 9.
In Ms. Harrington's sixth grade classes, 28 out of 35 students bought their lunch. How many students out of every 5 bought their lunch? go back to lesson 10-2-5 for the chart
Out of every 5 students, 4 bought their lunch.
A student runs 2 minutes for every 10 minutes he walks. Complete the table and graph the ratios.
Running (minutes)2 4 6 8 10 Walking (minutes)10 20 30 40 50
Which of these ratios, if any, are proportional to 75/ 90 ?
Select all ratios that are proportional to StartFraction 75 Over 90 EndFraction A.6/5 B.20 / 24 Your answer is correct C C.300 360 Your answer is correct D D. 80 / 95 E.35/42 Your answer is correct.F. F.No ratios here are proportional to StartFraction 75/ 90 .
Two stores sell the same item. Which store has the better buy? Store Price A 10 items for $7.00 B 80 cents per item
Store A has the better buy.
A migrating bird flies 260 miles in 13 hours. How many miles does it fly in 5 hours?
The bird flies 100 mile(s) in 5 hours.
A delivery truck drove 45 miles per hour. It took 3 hours to travel between two towns. What is the distance between the two towns? Use the equation d=rt, where d is distance, r is rate, and t is time.
The distance between the two towns is 135 miles.
There are 3 boys and 2 girls in the school jazz band. Find the ratio of the number of boys in the band to the total number of students in the band.
The ratio of the number of boys to the total number of students in the band is 3 : 5
On a school field trip, the bus travels 15 miles in 30 minutes. Find the speed of the bus in miles per hour. Use the equation d=rt, where d is distance, r is rate, and t is time.
The speed of the bus is 30 miles per hour.
If 9 model airplanes cost $63, what is the unit price of the model airplanes?
The unit price is $ 7 per model airplane.
In a week, 12 hens laid 84 eggs. What is the unit rate for eggs per hen?
The unit rate is 7 eggs per hen.
In a recent student government election, the ratio of students who voted for the winner to all the students who voted was 0.95. The number of students who voted was 40. How many votes did the winner get?
The winner received 38 votes.
A worker earns $6.25 per hour. For how many hours would the worker have to work to earn $150?
The worker would have to work for 24 hour(s).
Vonna scored 72 goals at soccer practice. Her ratio of goals to misses was 8 font size decreased by 5 : font size decreased by 5 5. How many times did she miss?
Vonna missed 45 times.
Convert 31 centimeters to inches. Use the rate, or conversion factor,1 inch/ 2.54 centimeters
centimeter equals 12.2 inches (Round to the nearest hundredth as needed.)
The attendant at a parking lot compared the number of hybrid vehicles to the total number of vehicles in the lot over a weekend. The ratios for the three days were equivalent. Complete the table.
fri 4 7 sat 36 63 sun 32 56
Are the ratios StartFraction 28 / 49 40 /70 equivalent?
yes
In the workbench drawer, the ratio of hex bolts to all bolts is 0.42. Write the ratio as a fraction in simplest form.
As a fraction, the ratio of hex bolts to all bolts is 21 / 50
Convert 14 yards to feet. Use the rate suggested by the equation 3 feet=1 yard.
14 yards=42 feet
Last month, Carmen paid a gas and electric utility bill of $75. The electricity part of the bill was $45. Write the ratio of the payment for gas to the payment for electricity. What is the ratio of the payment for gas to the payment for electricity?
30:45
55% of what number is 22?
55% of 40 is 22.
Write a ratio equivalent to 4/7 that has greater terms
A. 16/14 B. 8/ 28 C. 5/8 D. 3/6 E. 12/ 21 is correct F. 7/4
