Question 235831
X= large pumpkins sold
Y= small pumpkins sold


Price:
  9x+3y=1950


Number of pumpkins:
  x+y=310


*[invoke linear "x", "y", 9, 3, 1950, 1, 1, 310]

So, 170 large pumpkins were sold, and 140 small pumpkins were sold.