Sales & Discounts
If you go shopping or have shopped before, you will notice that there are always items on sale. Let’s say that you went shopping for a new pair of sneakers, but the pair you want is a little out of your budget – $100. If you choose you wait a couple of months, the pair of sneaks will be on SALE – meaning that it will be at a reduced price. The reason why things go on sale is because stores and manufacturers have not sold enough of the certain item. Also, as time passes, the more outdated things become.
Shopping Vocabulary:
Sales tax – percentage of your purchase that will be added on to your purchase. This amount is given to the government.
Promotion – something that gets customers to shop at the store. Example: Buy one get one free, 60% off entire store, etc.
Discount – a certain amount that is taken off your purchase. It usually is a percentage of the total price.
Percent Increase/Decrease
To find the percent increase or decrease:
1. Subtract the bigger number from the smaller number
2. Divide by the original number
3. Convert the quotient into a percent
Ex: A Pikachu trading card originally cost $10. Three years later, the card costs $15. Find the percent increase.
1. $15 – $10 = $5
2. $5 /$10 = 0.5
3. 0.5 = 50%
Now, let’s change up the problem to find a percent decrease.
A Pikachu trading card originally cost $10. Three years later, the card costs $8. Find the percent decrease.
1. $10 – $8 = $2
2. $2 /$10 = 0.2
3. 0.2 = 20%