A realtor is decorating some homes for sale, putting a certain number of decorative pillows on each twin bed and a certain number on each queen bed. In one house, she decorated 1 twin bed amd 3 queen

A realtor is decorating some homes for sale, putting a certain number of decorative pillows on each twin bed and a certain number on each queen bed. In one house, she decorated 1 twin bed amd 3 queen beds and used a total of 30 pillows. At another house, she used 20 pillows to spruce up 2 twin beds and 1 queen bed. How many decorative pillows did the realtor arrange on each bed?