Unit 3: Working with Percent

Questions

1. Solve each problem by setting up a proportion.
1. $150\%\text{ of }7$
2. $12.5\%\text{ of }48$
3. $20\%\text{ of }16$
4. $18\%\text{ of }40$
5. $\tfrac{1}{4}\%\text{ of }20$
6. $0.5\%\text{ of }122$

2. Use the proportion method to solve these questions.
1. $75\%\text{ of }12$
2. $3\tfrac{1}{4}\%\text{ of }200$ is?
3. What is $16\%\text{ of }34$?
4. $90\%\text{ of }75$ is
5. Find $10\%\text{ of }27$
6. $16\tfrac{2}{3}\%\text{ of }163$

3. Find the total cost of each item, using 12% HST.
Item Cost HST (12%) Total Cost
A T-shirt $14.99 $$$\begin{split} \dfrac{\text{X}}{14.99} &= \dfrac{12}{100} \\ \text{X} &= 1.80 \end{split}$$$ $1.80 + 14.99 = 16.79$ B 40″ flat screen TV$699.00
C Tent $168.79 D Drill and bit set$248.99
E Shoes $79.98 4. Solve these percent problems. 1. All pants are 25% off said the sign in the window. What will be the sale price of a pair of pants originally priced at$59.78?
2. 30% of the forest will be cut down in the next three years. The forest is 150 acres large. How many acres will be left after the cut?
3. All winter clothes are on sale for 15% off. A set of gloves cost $18.00. How much will you save? 4. Rent will increase 10% on Oliver’s apartment on January 1. His rent was$460.00 per month. What will his new rent be?
5. The French Bread Bakery staff will get a one-time 15% pay increase on their Christmas pay check. If Manon works 63 hours at $12.78/hour for that pay check, how much will she get paid? (Figure out the regular pay first and then add on the 15% increase.) 6. The bill at the restaurant was$38.00. Add a 20% tip. What did the customer pay in total?
7. The mark up on a pair of fancy running shoes is 45%. The shoes cost the buyer $38.00. How much will they be sold for after mark-up? Answers to Unit 3 Review 1. $10.5$ 2. $6$ 3. $3.2$ 4. $7.2$ 5. $0.05$ 6. $0.61$ 1. $9$ 2. $6.5$ 3. $5.44$ 4. $67.5$ 5. $2.7$ 6. $27.16$ 1. Item Cost HST (12%) Total Cost A T-shirt$14.99 $1.80$16.79
B 40″ flat screen TV $699.00$83.88 $782.88 C Tent$168.79 $20.25$189.04
D Drill and bit set $248.99$29.88 $278.87 E Shoes$79.98 $9.60$89.58
1. $44.83 2. 105 acres 3.$2.70
4. $506.00 5.$925.91
6. $45.60 7.$55.10