Homework 12/11

Front

What is percent of change?

Back

Percent of change is a measure of how much a quantity has increased or decreased relative to its original value, expressed as a percentage.

Front

How do you calculate percent of change?

Back

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

Front

If a camera's original price is $50 and the sale price is $38, what is the percent of change?

Back

24% decrease.

Front

If Susie's hourly wage increased from $8.75 to $9.50, what is the percent of change?

Back

9% increase.

Front

What is the original price if the sale price is $38 and the percent of change is 24%?

Back

Original Price = Sale Price / (1 - Percent Change) = $38 / (1 - 0.24) = $50.

Front

If Mrs. Mroc's class size increased from 35 to 42 students, what is the percent of change?

Back

20% increase.

Front

What does a 20% increase mean in terms of original value?

Back

It means the new value is 120% of the original value.

Front

What is a decrease in percent of change?

Back

A decrease in percent of change indicates that the new value is less than the original value.

Front

If a price decreases from $100 to $80, what is the percent of change?

Back

20% decrease.

Front

What is the formula for finding the new value after a percent increase?

Back

New Value = Original Value x (1 + Percent Increase).