Proportions & Ratios
If 3 apples cost $1.50, how much do 6 apples cost?
$3.00
What is the formula for calculating simple interest?
I = PRT, where I is interest, P is principal, R is rate, T is time
If you can buy 3 pounds of bananas for $1.50, what is the unit rate per pound?
$0.50 per pound
−3+5
2
-4 x 3
-12
What is the ratio of 8 to 4?
2:1
If you invest $200 at a 5% interest rate for 3 years, how much interest will you earn?
$30
A car travels 240 miles on 8 gallons of gas. What is the unit rate in miles per gallon?
30 miles per gallon
7 - 10
-3
5÷−1
-5
If a recipe calls for 2 cups of flour for every 3 cups of sugar, what is the proportion of flour to sugar?
2:3
If you borrow $1,000 at a 4% interest rate for 5 years, what is the total amount to be paid back?
$1,200
If a worker earns $120 for 6 hours of work, what is the hourly rate?
$20 per hour
If you owe $15 and you pay back $7, how much do you still owe?
$8
−6×−2
12
If a car travels 150 miles on 5 gallons of gas, what is the unit rate in miles per gallon?
30 miles per gallon
How much interest is earned on $500 at a rate of 3% over 2 years?
$30
If a cyclist travels 30 miles in 1.5 hours, what is the unit rate in miles per hour?
20 miles per hour
−8+(−4)
-12
-15÷3
-5
If 5 shirts cost $40, how much would 8 shirts cost at the same rate?
$64
If you want to earn $50 in interest from a $400 investment, what interest rate would you need if the investment is for 5 years?
2.5%
A recipe requires 2 cups of sugar for every 4 cups of flour. What is the unit rate of sugar to flour?
1:2
−12−6
-18
8×−4
-32