Equivalent Ratios
What is an equivalent ratio of 4:3?
8:6, 12:9, 16:12, 32:24,
2
What is a ratio?
A relationship between two amounts showing the number of times one value is contained within the other
4:3
8:6
12:x
12:9
True or False?
4:3 = 2:6
False
What is an equivalent ratio of 6:5?
12:10, 18:15, 24:20
A car travels 75 km/h for 3 hours. How far did the car travel?
225 km
What is an equivalent ratio?
An equivalent ratio is a ratio that has the same value as another, but is expressed differently.
3:5
6:X
6:10
Proportional or not?
A runner runs a race at a constant pace for the first half of the race, and picks up the pace during the second half.
Not proportional
What is an equivalent ratio to 49:70?
7:10
10 notebooks cost $37.50, how much do 8 notebooks cost?
$30
What is rate?
A comparison of 2 quantities that have different units.
4:6
X:18
12:18
If x/5 = 4/10, find x.
x=2
What is an equivalent ratio to 8:9 containing the number 56?
56:63
A recipe uses 3 cups of flour and 2 cups of sugar. How many cups of flour are needed if 14 cups of sugar are used?
21 cups of flour.
What is the difference between ratio and rate?
A ratio is the comparison between two different quantities while rate is the comparison between two different quantities that contain different units.
40:X
8:20
4:10
40:100
A class has a ratio of boys to girls of 3:5. There are 24 students. How many are girls?
9 girls
What is an equivalent ratio to 64:80 in it's simplest form?
5 shirts cost $75 dollars. How much does 8 shirts cost?
$120
What is a proportion?
A statement illustrating equality between two ratios.
a:b:c:d
4:9
16:36
64:X
64:144
A ratio is 2:3 with the total objects being 20. What are the numbers in the ratio?