Baseball sells land ($40,000 basis) for a total consideration of $400,000, consisting of a $45,000 down payment in the year of sale and six annual payments of $50,000 beginning in the following tax year. In addition, the purchaser assumed a $55,000 mortgage on the property. Baseball's "gross profit percentage" for purposes of the installment sale computation is: Group of answer choices 100% 60% 40% 90% 10%