Topic 2.1 - 2.3
The ratio of boys to girls in Miss Martinovitch's class is 2:3. If there are 15 girls in her first period class, how many boys are there?
What is 10?
y = 1.4 x
What is 1.4?
A local cheer gym has a total of 40 cheerleaders, of whom 10% are flyers. How many flyers are there?
What is 4 flyers?
If the original quantity is 100 and the new quantity is 84, what is the percent decrease?
What is 16%?
A soccer team has a total of 360 jerseys. There are 126 medium-sized jerseys. What percent of the jerseys are medium-sized?
What is 35%?
What is a rate with a denominator of 1?
True or false:
The following equation represents a proportional relationship
y = 7x - 3
What is false?
When a flower was first planted in a garden it was 5 cm tall. After two weeks, it was 115% as tall as when it was planted. What was the height of the flower after two weeks?
What is 5.75cm tall?
Timothy estimated that 1200 people would attend a conference. There was actually 1234 people. Find the percent error of Timothy's estimate. Round to the nearest whole percent.
What is 3% error?
Nick deposited $500 into a savings account 2 years ago. His simple interest rate is 4%. What is Nick's account balance now?
What is $756?
True or false: The following table shows a proportional relationship.
x | y
30 | 6
35 | 7
40 | 8
45 | 9
What is true.
A recipe calls for 5 ounces of flour for every 8 ounces of sugar. This is the constant of proportionality.
What is 0.625?
A bike path is 23.5 miles. Damien is 20% of the way to the end. How far is Damien on the path?
What is 4.7 miles?
A store purchases a can of soup for $0.75 and decides to mark it up 320%. What is the new selling price?
What is $2.40?
The price of a pair of sweatpants is $32. The sales tax is 12%. How much money will you pay in total for the sweatpants?
What is $35.84?
A car goes 1/10 of a mile in 1/100 an hour. What is the car's unit rate?
What is 10 miles per hour.
The two things a graph must do for it to be proportional.
What is being a straight line and going through the origin (0,0).
15 is what percent of 50?
What is 30%?
A store purchases a water bottle for $15 and sells it for $35. What is the percent markup?
Round to the nearest whole percent.
What is 16%?
Tony uses 2.5 cups of noodles in a dish that serves 10 people. Jenna used 1.6 cups of noodles in a dish that serves 8 people. How many more cups of noodles is in one serving of Jenna's dish than Tony's?
What is 0.05 cup?
Dominic earns $35.50 for 5 hours of work. Marissa earns $57.20 for 8 hours of work.
A. Who earns more money per hour?
B. How much more?
Who is Marissa, what is $0.05 more.
The distance a plane flies has a proportional relationship with the number of hours in flight. The plane flies 837 miles per 3 hours.
A. What is the constant of proportionality?
B. Using the constant of proportionality, how long will it take the plane to travel 4185 miles?
A. What is k = 279 miles per hour?
B. What is 15 hours?
The local skating rink decided to raise their ticket price by 15%. The original price was $8. What is the equation that can be used to find the amount by which the price rose?
What is a = 0.15 * 8
Ziva opened a bank account and initially deposited $1500. After 10 years, she earned $450 in interest. What is her interest rate?
What is 3%?
What is 90 miles?