What is the rate of gross profit on the installment sales made by Vaughn Corporation during 2010? A. 75% b. 60% c. 40% d. 25% If expenses, other than the cost of the merchandise sold, related to the 2010 installment sales amounted to $90,000, by what amount would Vaughn"s net income for 2010 increase as a result of installment sales? A. $110,000 b. $177,500 c. $200,000 d. $710,000 What amount would be shown in the December 31, 2011 financial statement for realized gross profit on 2010 installment sales, and deferred gross profit on 2010 installment sales, respectively?