A store is currently offering a 60% discount on all items purchased. Your cashier is trying to convince you to open a store credit card and says to you, "In addition to the 60% discount you are receiving for purchasing these items on sale today, you will get an additional 20% off for opening a credit card account. That means you are getting 105% off!" What is the mistaken assumption here?
Why is that assumption incorrect?
If you did truly have an 80% discount, explain what should happen when you go to the counter to buy $500 worth of items? show calculation
If you got your 60% discount and opened up the card for an additional 20%, what is the actual % discount you would receive? show calculation
Is it better to apply the 60% discount first or the 20% discount first? show calculation