Lesson 6-4, 6-5 and 6-6 - Version 2

Front

What is percent decrease?

Back

Percent decrease is a measure of how much a quantity has decreased in relation to its original amount, expressed as a percentage.

Front

How do you calculate percent decrease?

Back

Percent decrease = ((Original Value - New Value) / Original Value) x 100.

Front

What is the simple interest formula?

Back

The simple interest formula is I = Prt, where I is the interest, P is the principal amount, r is the rate of interest, and t is the time.

Front

What does 't' represent in the simple interest formula I = Prt?

Back

In the formula I = Prt, 't' represents time, typically measured in years.

Front

How do you calculate the price after a discount?

Back

Price after discount = Original Price - (Original Price x Discount Rate).

Front

What is a discount?

Back

A discount is a reduction in the original price of a product or service, usually expressed as a percentage.

Front

How do you calculate percent increase?

Back

Percent increase = ((New Value - Original Value) / Original Value) x 100.

Front

What is the formula to find the final price after applying a discount?

Back

Final Price = Original Price x (1 - Discount Rate).

Front

If a telescope costs $99.99 and has a 13% discount, what is the final price?

Back

Final Price = $99.99 x (1 - 0.13) = $86.99.

Front

If a concert ticket costs $100.00 and has a 21% discount, what is the final price?

Back

Final Price = $100.00 x (1 - 0.21) = $79.00.