Answer: she is incorrect
Explanation:
If Emily had a coupon for 20 percent off her purchase, this means that whatever she bought, the total amount would be reduced by 20%. She will be paying 80%
She finds a backpack she likes on the discount rack. It's original price is $60, but everything on the rack comes with a 30 percent discount.
This means that ordinarily,the amount she is meant to pay on the total goods she is buying is 30% lesser than $60. She will be paying
60 - (30/100 ×60)
60 - 0.3×60 = 60-18 = $42
Since she has a 20% coupon on total cost of goods bought, she would be paying
42 - (20/100 ×42)
42 - 0.2×42
= 42 - 8.4 = $33.6
Therefore,
If Emily says, "thirty percent and twenty percent make fifty percent so that her cost will be $30. She is incorrect. Her cost is $33.6