Percent Increase, Decrease: Equation

Front

What is the formula to calculate the final price after a percentage decrease?

Back

Final Price = Original Price × (1 - Discount Rate)

Front

What is the formula to calculate the final price after a percentage increase?

Back

Final Price = Original Price × (1 + Increase Rate)

Front

If an item costs $100 and has a 20% discount, what is the final price?

Back

Final Price = 100 × (1 - 0.2) = $80

Front

If an item costs $50 and increases by 30%, what is the final price?

Back

Final Price = 50 × (1 + 0.3) = $65

Front

What does a 25% discount mean in terms of the final price?

Back

A 25% discount means you pay 75% of the original price.

Front

How do you express a 10% increase in price mathematically?

Back

A 10% increase can be expressed as Original Price × 1.1.

Front

If a shirt originally costs $40 and is on sale for 15% off, what is the final price?

Back

Final Price = 40 × (1 - 0.15) = $34.

Front

What is the effect of a 50% increase on an item that costs $80?

Back

Final Price = 80 × (1 + 0.5) = $120.

Front

How do you calculate the percentage decrease from $60 to $45?

Back

Percentage Decrease = ((60 - 45) / 60) × 100 = 25%.

Front

What is the final price of an item that costs $200 with a 10% discount?

Back

Final Price = 200 × (1 - 0.1) = $180.