Find the values of x and y

Perry has a garden. 1/2 of his garden is planted with tomatoes. 1/3 of his garden is planted with peppers. the remaining part of his garden is planted with flowers. what fraction of perry’s garden is planted with flowers?

Nick estimated that 5/8+4/7 is about 2.explain how you know his estimate is not reasonable plz and fast i will give 50 points

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500