Percent Proportion
Word Problems
Percent Change
Percent Error
Review
100
1% of what number is 7?
what is 700
100
Use the percent proportion to solve: If 12 out of 25 people like blue jolly ranchers. What percent of people like blue jolly ranchers?
What is 48% of people
100
A fruit drink that was sold in 16-ounce containers is now sold in 20-ounce containers. What is the percent of change in quantity? State whether this is an increase or a decrease.
What is 25% increase.
100
Jessie estimates the weight of her cat to be 10 pounds. The actual weight of the cat is 13.75 pounds. Find the percent of error to the nearest whole percent.
What is 27%
100
A skydiver falls 144 feet in three seconds. How far does the skydiver fall per second?
What is 48 feet per second
200
What % of 45 is 72? Round to nearest whole percent.
What is 63%
200
Use the percent proportion to solve: The local bakery sells 150 donuts a day. If 70% of these donuts are sold in the morning, how many donuts are sold in the morning?
What is 105 donuts
200
On Tuesday, Nash made 231 free throws on Wednesday he made 258 free throws. What is the percent change in his free throws? Round to the nearest percent. State whether this is increase or decrease.
What is 12% increase.
200
Marcus estimates that 230 people will attend the choir concert. The actual total that attended was 300 people. Find the percent of error to the nearest whole percent.
What is 23%
200
One bag of pretzels costs three dollars. Five bags of pretzels costs $10. Which has the lower unit price?
What is five bags..... $2 per bag
300
55 is 40% of what number?
What us 137.5
300
Use the percent proportion: A serving of ice cream contains 1200 calories. One hundred forty-five calories come from fat. What percent of the total calories come from fat? Round to nearest whole percent.
What is 12%
300
Al's Quick Mart sells milk for $1.99 per gallon, but they used to sell it for $2.79. What is the percent change in the price? Round to the nearest whole percent. State whether this is increase or decrease.
What is 40% decrease.
300
Eva estimates that 475 songs will fit on her MP3 player. The actual amount of songs that fit is 380. Find the percent of error to the nearest whole percent.
What is 25%
300
It costs $3.99 for 25 fl. oz. of detergent or $6.99 for 90 fl. oz. Which is a better buy?
What is 90 fl oz
400
What number is 35% of 72?
what is 25.2
400
Use the percent proportion: Danny just hired a new employee to work in your bakeshop. In one hour the employee burned 625 chocolate chip cookies. If this represented 25% of the day's production, how many cookies did you plan on producing that day?
What is 2500 cookies
400
What is the percent of change in the cost of a DVD set that originally sold for $49.99 and is now on sale for $24.99?
What is 50% decrease
400
A custom estimates a computer at an electronics store is $1099. Determine the percent of error in price if the actual price is $1349. Round to the nearest whole percent.
What is 19%
400
Proportional? Explain.
what is yes because it is straight and goes thru origin
500
What percent of 200 is 5? Round to nearest whole percent.
What is 3%
500
Use the percent equation: Out of 3500 students of a school, only 36% passes. How many students passed?
What is 1260 students
500
In 2016, Jennifer made $11.50 an hour, and in 2017, she made $12.75 an hour. What is the percent of change in Jennifer's pay per hour from 2016 to 2017?
What is 11% increase
500
A student estimates the mass of an object to be 325g. The actual mass is 342g. What is the percent error of the students calculation?
What is 5%
500
Proportional? Explain
What is no because it does not go thru origin