At the craft store, Bill bought a bag of orange and purple marbles. The bag contained 40 marbles, and 90% of them were orange. How many orange marbles did Bill receive?

36 orange marbles

Step-by-step explanation

40x.90= 36

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.