Equation From a Situation Practice Test

Town A has a population of 12,000 and is growing by 250 people per year. Town B has a population of 15,000 and is decreasing by 150 people per year. Which equation can be used to find y, the number of years it will take for the two towns to have the same population?

A rectangular garden has a perimeter of 120 feet. The length of the garden is twice its width. Which equation represents the perimeter of the garden in terms of its width, w?