Lilly and Laura pooled their money to purchase their brother, Liam, a video game for his birthday. The video game cost a total of $45. If Laura was only able to contribute of what Lilly did, how much did Laura put toward the present?
Step-by-step explanation: let x represent the amount Laura and Lilly contributed each. If Laura and Lilly contributed the same amount, x+x=2x=45. If 2x=45, divide both sides by 2 to find the value of x. 45/2= 22.5.