Anonymid Anonymid Mathematics Answered Lisa needs 250 yards of yarn to knit a hat. She has 185 yards of yarn and needs to buy the rest. How many yards of yarn does she need to buy? Use the variable y to represent the number of yards of yarn she needs to buy. Which equation represents this situation and its solution? 250y = 185; y = 55 y + 185 = 250; y = 65 y + 250 = 185; y = 65 185y = 250; y = 55