A clothing store says they are having a 25% off sale with an additional 25% off any blue stickered garments. They claim you are saving 50%. However, when you buy a new coat originally marked $125 the sale price comes up $70.31. You argue that you are being overcharged. What was your actual percent savings? Explain the retailer's mistake. 

 

8) Alcohol Mixtures: In a chemistry class, 12 liters of a 12% alcohol solution must be mixed with a 20% solution to get a 14% solution. How many liters of the 20% solution are needed? 

Compute and compare the following interest situations if you deposit $2500 into an account with 3.5% interest for 10 years.

9) The account pays simple interest.

10) The account pays compounding interest monthly.

11) The account pays continuously compounding interest.

12) How much difference is there between the three different types of interest? Explain.