Rates
If you buy 4 chocolate bars for $8.40, what is the unit rate?
$2.10
Simplify the ratio of 9:3.
3:1
x/4 = 6/8
If the ratio of boys to girls in a class is 2:3 and there are 30 students total, how many are girls?
12
If we drove 42 km in 2 hours, what was our speed?
21 km/h
If you buy 12 books for $42, how much does each book cost?
$3.50
Simplify the ratio of 14:6.
7:3
4/7 = 24/x
x = 42
If I bought a box of 50 pencils for $7.00, and I sold all 50 pencils for $0.25, how much would I make in profit?
$5.50
What distance would we travel if we drove 60km/h for 1.5 hours?
90 km.
If I bought 5 bags of chips for $8, how much would 16 bags of chips cost?
$25.60
Simplify the ratio of 27:15.
9:5
8/x = 56/77
x = 11
The ratio of boys to girls on a school trip was 5:4. Unfortunately 6 boys got sick and needed to go home, which changed the ratio of boys to girls to 3:4.
How many girls went on the trip?
12
How many minutes would it take to travel 50 km going at a speed of 80 km/h?
37.5 minutes.
If 12 movie tickets cost $22 more than 8 movie tickets, how much would 3 movie tickets cost?
$16.50
Simplify the ratio of 92:60.
23:15.
14/20 = x/30
x = 21
The ratio in a bag of blue, green and red candies is 4:3:2.
You eat 6 candies: 1 blue, 2 green and 3 red. The ratio of candies is now 3:2:1.
How many candies of each colour are left in the bag?
15 blue, 10 green, and 5 red.
If I drive at a speed of 40 km/h for 21 minutes, and then at a speed of 60 km/h for 30 minutes, how far did I travel?
44 km.
If I buy 42 hamburgers for $20, and 36 buns for $15, how much should I charge at a BBQ in order to make a profit of $1 per burger?
0.48 + 0.42 = $0.90
Add $1 profit = $1.90
Simplify the ratio of 112:96.
7:6
24/32 = 6/x
x = 8
If I buy 10 bottles of pop for $16 and 20 cups for $5, and each bottle of pop can pour 10 cups, how much should I sell one cup of pop for to make a $0.50 profit on each?
$0.25 for each cup
$0.16 for each amount of pop in the cup
$0.25 + 0.16 = $0.41
Plus $0.50 of profit = $0.91
We should sell each cup of pop for $0.91.
If I drive a distance of 40 km going at a speed of 60 km/h, and then I drive a distance of 50 km going at a speed of 80 km/h, how many minutes is my trip?
77.5 minutes.