So there are 4 slots and 4 options for the first slot, 3 for the second slot, and so on. There is a total of 24 options. Since you want a specific order, it's 1/24. (the option you want/total options)
The answer is 7.50%.
6 * 0.075 = 0.45.
6 - 0.45 = 5.55.
30% off means they are paying 70% of the original price.
Sale price = 2.40 x 0.70 = $1.68 for 10 plates
50 plates / 10 = 5
They buy 5 packages of plates.
1.68 x 5 = $8.40
Total price = $8.40
She would have 40% left for the sides. She took off 50% (25%+25%), then 50% of 80 is 40. Hope it helps.
