Let x and y be the number of pounds of apple and peaches sold, respectively. With the given prices above, the system of linear equations that would enable us to answer this item is,
x + y = 165
1.75 + 2.5y = 337.50
The values of x and y from the equations are 100 and 65, respectively.
Answer: apples = 100 pieces
peaches = 65 pieces