So you first want to find what is 40% of the retail price ($369). So divide by 10 to get 10% ($36.90) and then multiply by 4 to get 40% ($147.60). Now that you have 40% subtract that by the retail price. $369 - $147.60= $221.40
There is a 1/4 chance of getting the Blue Marble out of the bag. But when it is 2 in a row you have to multiply your chances so it would be 1/4 * 1/4 or 1/16
