Kalome a senior salesman is a paid no commission on the first sh 30000 worth of goods he sells each month. He receives commission at the rate of 3 1/2% for the goods sold up to sh 70000 and at the rate of 5% on anything above that. Kalome is also paid a basic salary of sh 4040 and a house allowance of sh 1500 per month. At the end of March his gross income was sh 8665 while at the end of April he received commission of sh 4100.Determine the