Assume Kupfer Company has the following reported amounts: Sales revenue $510,000, Sales returns and allowances $15,000, Cost of goods sold $330,000, and Operating expenses $90,000. (a) Compute the net sales. Net sales $enter the net sales in dollars (b) Compute the gross profit. Gross profit $enter the gross profit in dollars (c) Compute the income from operations. Income from operations $enter the income from operations in dollars (d) Compute the gross profit rate. (Round answer to 1 decimal place, e. g. 25.2%.) Gross profit rate enter the gross profit rate in percentages rounded to 1 decimal place %