First we need to find what the retail cost of the chest is. If it's marked up 150%, we use 763.84 + 1.5(763.84) which gives us a retail price of $1909.60. If Ben makes 5% on the sale as his commission, then we take 5% of 1909.60 which, in algebraic terms, looks like this: .05(1909.60) which is $95.48
