suimawi9614 suimawi9614 17-05-2023 Business contestada variable+costs+as+a+percentage+of+sales+for+lemon+inc.+are+80%,+current+sales+are+$600,000,+and+fixed+costs+are+$130,000.+how+much+will+operating+income+change+if+sales+increase+by+$40,000?