Use percentages, simple price calculations, and a data table to solve practical problems one step at a time.
I can calculate a percent of an amount, find a discounted price, use a price table, and explain the steps in a budget problem.
Read each term and think about its meaning. Open the card for an explanation before moving on.
A part out of 100. 25% is the same as one-fourth.
An amount taken off an original price.
How much one item or service costs at the listed rate.
Work through the short situation and any table before answering the practice questions.
A bike-repair shop offers the following services. The prices are before tax. On Saturdays only, basic tune-ups cost 25% less. This discount does not apply to the other services. For this lesson, assume no taxes or additional fees.
| Service | Regular price |
|---|---|
| Basic tune-up | $48 |
| Safety inspection | $30 |
| Tire replacement | $24 |
| Thursday | Friday | Saturday |
|---|---|---|
| 9 | 12 | 15 |
Percent means “per hundred.” Ten percent of $30 is $3.
Twenty percent is twice ten percent: 2 × $3 = $6.
A fifth of $30 is $6, so the answer is reasonable.
Strategy: For a discounted price, find the discount first. Then subtract it from the original price. Keep dollar amounts and unit counts separate.
Choose an answer first. Select Check answer to see why it is supported or not. If you need help, show a hint and try again.
This shows your first attempts in this mini-lesson, not your overall GED ability or test readiness. Review mistakes and try again if useful.
A customer says the Saturday discount makes a basic tune-up cost $12. In 1–3 sentences, explain what is wrong with that claim. Show the correct discounted price.
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The $12 is the amount saved, not the price paid. Twenty-five percent of $48 is $12, so the discounted tune-up costs $48 − $12 = $36.
Self-check: A complete math response states what the number represents and shows the calculation.