ACT Math : Percentage
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Example Questions
Example Question #241 : Arithmetic
Max bought a book for $10. If he later sold the book at a 25% profit. How much money in total did he receive from the sale of the book?
$15
$12.50
$7.50
$10
$12.50
If the book is sold at a profit we know that the sale price is more than what he bought it for. 25% of $10 is $2.50. Therefore the sale price is $10 + $2.50 which is $12.50. It could also be seen as $10 X 1.25 =$12.50
Example Question #3 : How To Find Amount Of Profit
Sam was helping his school raise funds to buy books for the library. He bought small paper pads for $0.75 and sold them for $2.00. What was the percent mark-up, rounded to the nearest whole number?
150%
75%
None of the answers are correct
66%
167%
167%
$ Mark-Up = $ New Price – $ Original Price
% Mark-Up = $ Mark-Up ÷ $ Original Price
% Mark-Up = (2.00 – 0.75) ÷ 0.75 = 1.67 or 167 %
Example Question #2 : Profit Margin
Jenny has two jobs. The first is an office job salaried at $52,000 per year, so she makes the same amount of money every week, no matter how many hours she works. The second is a bartending job. She works 6 hours a night, 2 nights a week. She earns $3.50 per hour plus tips. If she earned $450 in tips this week, what is the total amount of money she made this week?
$1,492
$1,480
$1,021
$1,450
$1,000
$1,492
Salaried job:
$52,000 / year
1 year = 52 weeks
Therefore: $52,000 / 52 weeks = $1,000.00 per week
Bartending job:
6 hours x $3.50 per hour x 2 nights per week = $42.00
Total Earned = Salaried + Bartending + Tips
= $1,000.00 + $42.00 + $450 = $1,492
Example Question #3 : Profit Margin
A chair company produces 5,000 luxury chairs per year. Each chair requires $200 in wood and other materials to build. It also requires 3 hours of work by a craftsman, who earns $30 per hour. If the company wants to earn $3 million dollars in profit this year, how much should each chair cost?
$890
$800
$850
$900
$750
$890
Total cost of chair = materials + labor = $200 + (3 hours) ($30/hour) = $290
Total cost for 5000 chairs = $290 x 5,000 = $1,450,000
Profit = (5000) x Price per chair – Cost of Chairs
$3,000,000 = (5000) x Price per chair – $1,450,000
$4,450,000 = (5000) x Price per chair
Price per chair = $4,450,000 / 5,000 = $890
Example Question #6 : How To Find Amount Of Profit
A company made 
In addition to employee salaries, the company also pays 
What was the company's profit last year?
Annual profit = Total Annual Sales – Total Annual Expenses
Total Annual Sales = $400,000
Total Annual Expenses = Salaries + Rent + Expenses
2 employees @ $50,000 = $100,000
2 employees @ $70,000 = $140,000
12 months of rent @ $5,000 = $60,000
12 months of expenses @ $4,000 = $48,000
Total Annual Expenses = $348,000
Annual profit = $400,000– $348,000 = $52,000
Example Question #6 : Profit Margin
Madame buys 5 dozen eggs at 10 cents per egg. She then sells each dozen for 2 dollars. What is her profit margin?
Profit margin is equal to profit / revenue. She bought the eggs for (5)(12)(0.1) = $6 total. She is selling the eggs for (5)(2)=$10 total.
The profit margin is equal to 
Example Question #11 : How To Find Amount Of Profit
A bakery sells cupcakes for 
The profit that is made is the difference between the amount earned and the amount spent. In this instance, it costs 
To find the profit for one dozen cupcakes:
To find the profit for ten dozen cupcakes:
Example Question #12 : How To Find Amount Of Profit
It costs a retail store 
The profit percentage is really just a matter of percent change. We are changing from 
This is the same as 
Example Question #13 : How To Find Amount Of Profit
A set of cards were purchased for 
This question is really asking a hidden percentage change question. It really means, "The price changed from 
Solving for 
Example Question #14 : How To Find Amount Of Profit
The profit on a particular product per unit is measured as a percentage of the cost to produce that unit. If 
Remember, percentage profit is a ratio between two numbers. The ratio stays the same whether the numbers reflect hundreds of units sold or just one unit (unless otherwise told). So to find our answer, we only need to calculate the overall profit percentage.
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