John and Denise work at a factory. John arrived at work before Denise and began making shoes. John had already made 20 shoes when Denise began her work. John was producing shoes at a rate of 2 shoes per hour. Denise was able to produce shoes at a rate of 3 shoes per hour. At some point, John and Denise will have produced the same number of shoes. Part A: Write a system of equation to represent the situation (the means 2 equations). Let x=hours and y=shoes. Part B: How much time passes before John and Denise produce the same number of shoes and how many shoes was that?