There are 90 new houses being built. Last month, 1/6 of them were sold. This month, 1/5 of the remaining houses were sold. How many houses are left to be sold?

Maryann’s friends loved her bulletin board, and 4 of them asked her to make one for their homes. she offered to make each of her friends a replica of her bulletin board that measures 2 meters by 3 meters. how many kilograms of burlap should maryann collect to complete the bulletin boards for her friends? maryann should collect kg of burlap.