Let's solve each of these percent application problems step by step.
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1. Mr. Leader bought his fiancée’s engagement ring on sale 45% off. If the original price was $320, how much did he save?
Step 1: Find 45% of $320
We calculate:
$$
\text{Amount saved} = 45\% \times 320 = \frac{45}{100} \times 320 = 0.45 \times 320 = 144
$$
✔ Answer: He saved
$144.
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2. 38% of the 1200 Wilson students are 7th graders. How many Wilson students are 7th graders?
Step 1: Find 38% of 1200
$$
\text{Number of 7th graders} = 38\% \times 1200 = \frac{38}{100} \times 1200 = 0.38 \times 1200 = 456
$$
✔ Answer: There are
456 7th graders.
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3. Joe Cool made 85% of the free throws he attempted last season. If he made 51 free throws, how many did he attempt?
Let the total number of attempts be $ x $.
He made 85% of them, so:
$$
0.85x = 51
$$
Solve for $ x $:
$$
x = \frac{51}{0.85} = 60
$$
✔ Answer: He attempted
60 free throws.
---
4. Scooby made a 56% on his science test. If he got 14 problems correct, how many questions were on the test?
Let the total number of questions be $ x $.
Then:
$$
56\% \text{ of } x = 14 \Rightarrow 0.56x = 14
$$
Solve for $ x $:
$$
x = \frac{14}{0.56} = 25
$$
✔ Answer: There were
25 questions on the test.
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5. Charles bought a new shirt that was originally priced $13. He received a $2.60 discount. What percent discount did Charles receive?
We need to find what percent $2.60 is of $13.
Use the formula:
$$
\text{Percent discount} = \left( \frac{\text{Discount}}{\text{Original Price}} \right) \times 100 = \left( \frac{2.60}{13} \right) \times 100
$$
Calculate:
$$
\frac{2.60}{13} = 0.2 \Rightarrow 0.2 \times 100 = 20\%
$$
✔ Answer: Charles received a
20% discount.
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✔ Final Answers:
1.
$144
2.
456 students
3.
60 attempts
4.
25 questions
5.
20% discount
Let me know if you'd like these explained with visual models or proportions!
Parent Tip: Review the logic above to help your child master the concept of percent applications worksheet.