Answer:
1.
Discount
Item Original Price $10.00 off 40% off
Music box $60 60 - 10 = $50 60 * (1 - 40%) = $36
A faux Ming vase $30 30 - 10 = $20 30 * (1 - 40%) = $18
2. Go to Betty's Breakables if price is higher than $25.
At $25, both businesses would be offering the same discounted price of $15 because:
Annie = 25 - 10 = $15
Betty's = 25 * ( 1 - 40%) = $15
Betty's discount is proportion based however which means that it reduces more than Annie's will past a certain point. That certain point is if the original price is $25. From here on out, Betty will offer a better discounted price than Annie.
For instance, assume an original price of $50.
Annie = 50 - 10 = $40
Betty's = 50 * (1 - 40%) = $30
Betty will keep offering better prices in this manner for anything above $25.