1) how many boxes of cereal can you buy with $24.84 if one box costs $6.21?
2) a recipe for a cake calls for 4 cups of sugar. amy accidentally put in 9 cups. how many extra cups did she put in?
3) a stray dog ate 6 of your muffins. that was 2/9 of all of them. how many are left?

1) 4 boxes of cereal because $6.21 times 4 is exactly $24.84

2) 5 extra cups

3) 48 muffins

wholesale price is the initial price before markup. retail price comes after the markup.

a price of 8 bucks that's marked up by 100%   is

formula: initial price + (percent markup in fraction/decimal)(initial price)

8+(1)(8)

8+8

16

retail price is $16.