Question

A store has a sale with 20% off every item. When you enter the store, you receive a coupon that states that you receive an additional 10% off. Is this equal to a

30% discount? Explain your answer.

Answer 1

No, because let’s say for example that something cost $100.00 so you take 20% (or $20) off of the 100 and you’re left with $80.00. Well then you have your 10% off coupon so you take 10% off of 80, which is 8 dollars. So now you’re at $72.00.

But if we just took off 30% from 100 originally, you would be at $70.00

So no it wouldn’t be the same. If you wanted to check the idea yourself just use different numbers and see if they match at the end.