Ratios and Proportions
A package of 12 cans of black beans cost $6.84. What is the cost of one can of black beans?
$0.57
What is 15% of 60?
9
5/6=x/100
The population of a town is 800 residents. One year later, the population is 750 residents. What was the percent decrease?
-6.25%
Sophia invests $12,500 in an account that earns 4% simple interest. How much interest will Sophia earn after 3 years?
$1,500
Solve the proportion:
7/8=x/28.8
x=25.2
44%
A wise financial principle states that your rent should be no more than 30% of your income. Write a proportion that could be used to find x, the amount Rudolph should spend on rent if he brings home $3,000 per month?
x/3000=30/100
A hamburger used to cost $1.50. Now it costs $4.00. What is the percent increase?
166.67%
Taylor plans to borrow $6,000 from the bank to purchase a used vehicle. If he borrows the money at a rate of 5% simple interest for 3 years, what is the total amount he will have to pay back to the bank?
$6,900
A gear rotates 8 times every 15 seconds. How many times will the gear rotate in 1 minute?
32 times
15 students walk home from school, 24 students ride the bus, and 18 students take a car. What percent of students ride the bus?
42.11%
Kellin buys lunch for $14.25 and gets charged 8% tax. What is his total bill after tax?
$15.39
An art dealer purchased a painting 8 years ago for $650. Now, the value of the painting has increased by 90%. What is the value of the painting now?
$1,235
What is the total balance in Paisley's account if she invested $300 for 30 months at an interest rate of 7.2%?
$354
There are 3 math teachers for every 4 social studies teachers in this school. How many math teachers are there if there are 60 social studies teachers?
45 math teachers
Miss Herrlin spends $210 per month on groceries. If this is 12% of her monthly budget, what is her total monthly budget?
$1,750
Today, everything at the school store is on sale. The store offers a 20% discount. The discounted price of a keychain is 16 points. What is the regular price?
20 points
Target bought a pair of shoes for $30 and sold it for $55. What percentage increase was the markup?
83.3% increase
Julian invested $500 at a simple interest rate of 4%. Today, his account balance is $612. How many years has the money been invested?
5.6 years
It takes 72 minutes to read 43 pages. How many pages can you read in 6 hours?
215 pages
5 is 500% of what?
Sidney bought 4 sets of markers at the art store. The sets are usually $9 each. They were all on sale for 35% off the usual price. How much did Sidney spend on all 4 sets of markers before tax?
$23.40
The population of a city is 45,000 people. The population decreased by 10% over 10 years. How many people live there now?
40,500 people
Colton wanted to buy a car, so he invested $10,000 and was able to earn $4,000 in interest over 2.5 years. What annual interest rate was the investment earning?
16%