Rail earns 10% commission on each guitar and 15% commission on each keyboard he sells. In two week he sold 5 guitars that cost$260 each and 2 keyboards that costv$420 each. How much commission did he earn on these seven items?
By selling a home without using a realtor, Barb can avoid paying a 7.25% commission. She received an offer of $275,000 from a potential buyer. In order to give a comparable offer, for what price would a realtor need to sell the house?