All High School Math Resources
Example Question #1 : Setting Up Expressions
In April, the price of a t-shirt is . In May, the store increases the price by 50%, so that the new price is . Then in June, the store decreases the price by 50%, so that the t-shirt price is now . What is the ratio of to ?
If the original price of the T-shirt is , increasing the price by 50% means that the new price is 150% of , or .
If the price is then decreased by 50%, the new price is 50% of
The ratio of to is then:
The 's in the numerator and denominator cancel, leaving , or