What is the formula to calculate the final cost of an item after a discount and sales tax?
Percent Unit Review

Flashcard
•
Mathematics
•
7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Final Cost = (Original Price - Discount) + Sales Tax
2.
FLASHCARD QUESTION
Front
How do you calculate the percentage decrease in price?
Back
Percentage Decrease = ((Original Price - New Price) / Original Price) * 100
3.
FLASHCARD QUESTION
Front
What is simple interest and how is it calculated?
Back
Simple Interest = Principal × Rate × Time
4.
FLASHCARD QUESTION
Front
If an item is on sale for a certain percentage off, how do you find the sale price?
Back
Sale Price = Original Price - (Original Price × Discount Percentage)
5.
FLASHCARD QUESTION
Front
What does a 5% interest rate mean in terms of earnings on a deposit?
Back
It means for every $100 deposited, $5 will be earned in interest per year.
6.
FLASHCARD QUESTION
Front
How do you find the interest rate if you know the interest earned, principal, and time?
Back
Interest Rate = (Interest Earned / (Principal × Time)) × 100
7.
FLASHCARD QUESTION
Front
What is the relationship between principal, interest rate, and time in simple interest?
Back
The total interest earned is directly proportional to the principal amount, interest rate, and time.
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