Hughes uses 75% of his backyard area for gardening. He plants

Hughes uses 75% of his backyard area for gardening. He plants three types of flowers Roses, Tulips and Lilies. He uses 30% of the gardening area to plant roses and 20% of the gardening area to plant tulips. If he uses the remaining 30 acres of the gardening area to plant Lilies, then how many (…)