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Questions Correct: ______/24
HW #4 Math 7 – Percent, Markup/Discount, Original Cost
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1. a. Find the percent change. Write the
formula, then solve. Round to the nearest
whole number if necessary.
Original = $35
New = $55
2. Complete the chart, check off all that apply.
Whole
Natural
Integer
Rational
12
𝟏
𝟑
0.6532…
0
b. Is it an increase or decrease?
3. Evaluate:
6 + 42 ∙ (12 − 2)
4. Evaluate when 𝑥 = 5, 𝑦 = −2
3𝑦 + 2𝑥 + 62
5.
Irrational
6.
7. Solve:
a.
−8 − 13
b.
−9 − (−15 )
9. The Spinner Bike Shop was having a 40%
off storewide going out of business sale.
Ted wanted to purchase a mountain bike
that had an original price of $229. What
was the sale price of the mountain bike
after the discount was applied?
8. Solve:
a. What is 20% of 75?
b.30 is what percent of 50?
10. Casey rented a college astronomy textbook
from an online bookstore. The 6-month rental
fee for the textbook was $85. There was a 12%
markup for shipping and handling. What was
the total cost of the rental after the markup was
applied?
11. In an effort to increase their membership enrollment, the Hamilton Fitness Center was offering a
15% discount (good for one full calendar year) off of the regular monthly membership fee to new
members who joined anytime during the past month. The regular monthly membership fee is $35.
What is the promotional discounted monthly rate?
12.
13. A) Find the simple interest earned to the
nearest cent. Write the formula, then solve.
$1200 at 4.25% for 18 months
b) What is the account balance after 18 months?
14. Find the simple interest to the nearest cent.
Write the formula, then solve.
$4250 at 9% for 10 years
15. Find the GCF.
16. Find the GCF.
a)
a. 32, 8, 4
5, 25
b) 14, 49
b. 20, 25, 35
c) 15, 12
17. The sale price of an item is $60.00. This is
after a 15% discount. What was the
original cost of the item?
19.
18. Jason paid $50 for an item that was on sale. It
had a 20% discount off the original price. What
was the original price?
20. The high temperature was 15°𝐹. The
low temperature was -5°𝐹. What was the
change in temperature between the low
and high temperatures?
21. Express each rate as a unit rate.
a. $9 for 6 cans
a.
22.
51 meters in 8 seconds
23.
24. Solve for the simple interest earned. Robert placed $1,750 in his bank account for 7 years at an
interest rate of 3%.