Ratios/Rates
In a drawing, there are three circles, four stars, and three triangles. What is the ratio of stars to the total number of shapes?
2/5
It is the missing number in the proportion: 5/8 = ?/48
n=30
Write the fraction or mixed number as a percent.
7/8
87.5%
What is 10% of 170? _______________
17
Andres used 3 pears and 9 apples to make a fruit salad. What ratio represents the number of pears to the number of apples in the fruit salad?
3:9 or 1:3
Ari can walk 2 miles in 40 min. What is the amount of time it will take him to walk 4 miles?
80 min.
5 shovels of sand are mixed with 4 shovels of gravel to make cement. What is the number of shovels of gravel needed for 45 shovels of sand?
36
Write the fraction or mixed number as a percent.
1 13/20
25% of what number is 15?
60
For a class trip, the teachers would like to have one adult for every 10 students. There are 190 students on the trip. How many adults should go on the trip?
19 adults
Paul used 6 black tiles and 12 white tiles for a pattern. What is the ratio of black tiles to white tiles? (simplest form)
1:2
30 buses can carry 1500 people. What is the number of people that can be carried by 5 buses?
250
Write .87 as a percent and as a fraction.
87% and 87/100
70% of what number is 105?
150
An alligator can run at a speed of 13 ft per second on land. At this rate, how far can it run in 3 seconds.
39 feet
A window washer cleaned 38 windows in 2 hours. At this rate, how many windows did he clean in 7 hours?
133 windows
Alison's Fresh Eggs transports its eggs in crates. It takes 2 trucks to carry 80 crates. What is the number of crates that 8 trucks can carry?
320
Write 20% as a fraction and a decimal.
1/5 and .20
What is 28.3% of 100?
28.3
Runner A completes 12 laps around a track in 22 minutes. Runner B completes 8 laps in 15 minutes. Which runner had a greater average speed?
Runner A
An airplane travels 4,400 miles in 8 hours. What is the unit rate of the airplane’s distance traveled and time?
550 miles per hour
It is the missing number in the proportion: 6/8 = ?/20
15
Write 7/200 as a decimal and percent.
3.5% or .035
What is 17% of 40?
6.8
In a class, 60% of the students are girls. There are 18 girls in the class.
a. How many students are in the class?
b. How many boys are in the class?
a. 30 students
b. 12 students