Let x and y be the number of pounds of apples and peaches, respectively. With this representation, two equations are generated.Â
  (1)        x + y = 165
  (2)       1.75x + 2.50y = 337.50
Simultaneously solving for the values of x and y gives an answer of x = 100 and y = 65. Thus, Mo sold 65 pounds of peaches.Â