2.02 Percent Increase / Decrease

Front

What is a percent increase?

Back

A percent increase is a measure of how much a quantity has grown relative to its original amount, expressed as a percentage.

Front

What is a percent decrease?

Back

A percent decrease is a measure of how much a quantity has shrunk relative to its original amount, expressed as a percentage.

Front

How do you calculate percent change?

Back

Percent change is calculated using the formula: ((New Value - Original Value) / Original Value) x 100.

Front

If the original price of an item is $20 and it increases to $25, what is the percent increase?

Back

Percent Increase = ((25 - 20) / 20) x 100 = 25%.

Front

If the original price of an item is $50 and it decreases to $30, what is the percent decrease?

Back

Percent Decrease = ((50 - 30) / 50) x 100 = 40%.

Front

What does it mean if an item is on sale for 20% off?

Back

It means the item is being sold for 80% of its original price.

Front

How do you find the sale price of an item after a percent discount?

Back

Sale Price = Original Price - (Original Price x Discount Percentage).

Front

If an item costs $80 and is on sale for 15% off, what is the sale price?

Back

Sale Price = 80 - (80 x 0.15) = $68.

Front

What is the total cost of an item after tax?

Back

Total Cost = Item Price + (Item Price x Tax Rate).

Front

If an item costs $40 and there is a 5% tax, what is the total cost?

Back

Total Cost = 40 + (40 x 0.05) = $42.