unit rate/ constant of proportionality
rates and ratios
percentages
100
A person can drive 200 miles in 4 hours. What is the constant of proportionality?
a) 40
b) 800
c) 50
d) 250
50
100
A battery factory typically produces 12,000 batteries per day and uses 50 boxes for packing the batteries.
If the number of boxes needed for packing is proportional to the number of batteries produced, how many more boxes would be needed on a day when 18,000 batteries are produced?
a) 360 boxes
b) 240 boxes
c) 75 boxes
d) 25 boxes
25 boxes
100
The Antonio family ate dinner at a restaurant. The total bill was $56. They left a tip that was 15% of the bill. What was the amount of the tip?
a) $64.40
b) $0.84
c) $5.60
d) $8.40
$8.40
200
Jordan went to the movie theater with his family. He paid $51.00 for 4 movie tickets, $13.50 for 2 buckets of popcorn, and $13.96 for 4 sodas.
Complete the statement below.
movie ticket= $12.75
bucket of popcorn= $6.75
soda= $3.49
200
The number of girls to boys in the education program is 5 to 1. If there are 90 students in the education program, how many are girls?
a) 75 girls
b) 450 girls
c) 15 girls
d) 85 girls
75 girls
200
Ms. Williams class has 15 boys and 35 girls. 40% of the students in her class take the bus to school. How many students do not take the bus to school?
a) 15 students
b) 20 students
c) 30 students
d) 35 students
30 students
300
Jayden purchase 25 chocolate bars for $15. How much is it for the cost per chocolate bar?
a) $10.00
b) $375.00
c) $1.66
d) $0.60
$0.60
300
a) 62
b) 93
c) 15.5
d) 31
15.5
300
Mason has 2 hours of free time. He spent 20 minutes playing outside, 25 minutes on his phone, and the rest of the time practicing his instrument. What percent of his time was spent playing his instrument?
a) 75%
b) 45%
c) 33%
d) 62.5%
62.5%
400
Jacqui needs 8 cups of sugar to make 12 batches of cookies. What is the constant of proportionality per batch of cookies?
a) 1.5
b) 0.6
c) 4
d) 3.5
0.6
400
Lisa reads 45 pages in 8 minutes. How many minutes would it take her to read 36 pages?
a) 5.25 minutes
b) 9 minutes
c) 6.4 minutes
d) 4.4 minutes
6.4 minutes
400
Cynthia’s resting heart rate is 64 beats per minute. During a recent workout, she measured her heart rate to be 112 beats per minute. By what percentage did her heart rate increase during her workout?
a) 175%
b) 48%
c) 75%
d) 43%
75%