1. The price of a certain stock increases from $25.00 to $40.00.  Compute the percent increase in the stock price.
2. The original price of the stock is $40.00.  The price decreases by 50%.  What is the current stock price?
3.  Last week, you finished Level 2 of a video game in 32 minutes.  Today, you finish Level 2 in 28 minutes.  What is your percent of change?
4.  If you spent 2 hours online on Saturday and 4.5 hours on Sunday, what is the percent of change in your online time from Saturday to Sunday?
5. You buy a shirt that is on sale for 30% off.  You pay $22.40.  Find the original price.