Finding the Percent of Change
You work at Kohl’s and at the end of the day, it is your job to make sure that all of the sale items that were left
in the fitting rooms get placed back on the correct sale racks. For example: all of the shirts that are 50% off need
to be on the rack that says “50% off”. The problem is, the clothes don’t actually say what percent off they are;
they just tell you the original price and the sale price. It is up to you to determine which clothing items go
where.
There are four sale racks: 10% off, 25% off, 50% off and 65% off.
Tell me which items go to which racks:
1. T-Shirt
Original Price: $23.95
Sale Price: $17.96
5.
T-Shirt
Original Price: $19.99
Sale Price: $10.00
2. Blue Jeans
Original Price: $48.60
Sale Price: $17.01
6.
Hoodie Sweatshirt
Original Price: $51.99
Sale Price: $46.79
3. Sweater
Original Price: $32.85
Sale Price: $24.64
7.
Dress Socks
Original Price: $7.40
Sale Price: $5.55
4. Hat
Original Price: $16.00
Sale Price: $14.40
Finding Percent Error in Calculating Volume:
They’re closing Fort Collins high school!! That means that some of their students will be coming to
Fossil Ridge. All of the Algebra 1 books that they used at FCHS are being boxed up and shipped over to
our school. There are 500 books that need to come over to our high school so we need to figure out how
many boxes we’ll need to hold them all. Sam’s club is going to donate boxes to us that each have a
volume of 50,000 cm 3 .
1. Using a ruler, find the volume of your Algebra 1 book.
2. What is the greatest possible error of your measurements? Use this to find the maximum and
minimum volume of the book.
3. What is the percent of error?
4. Based on your measurements in #1, how many books can fit into a box?
5. How many boxes should we get from Sam’s Club? Explain using max/min volume and percent
error.