Charter Corporation, which began business in 2016, appropriately uses the installment sales method of accounting for its installment sales. The following data were obtained for sales made during 2016 and 2017: 2016 2017 Installment sales Cost of installment sales Cash collections on installment sales during: $550,000 $540,000 412,500 486,000 2016 2017 160,000 40,000 155,000 Required: 1. How much gross profit should Charter recognize in 2016 and 2017 from installment sales? 2016 2017 Gross profit 2. What should be the balance in the deferred gross profit account at the end of 2016 and 2017? 2016 2017 Balance in deferred gross profit account