The measure of spt is b. The measure of tpr in s five more than two times spt. The measure of qps is twelve less than eight times the last measure of spt. Find the measure of spt, tpr, and qps.

Last month, leonhard euler's watch kiosk at the mall had total sales of $9,489. merchandise totaling $225 was returned. the goods that were sold cost leonhard euler's $5,481. operating expenses for the moth were $992. what was the gross profit on sales?