Question 23150
Let number of 3 lb boxes be "x"
Then number od 2 lb boxes is "x-24"
Weight of 3 lb boxes is (3)x lbs
Weight of 2 lb boxes is (2)(x-24) = 2x-48 lbs
EQUATION:
 Weight of 3 lb boxes + Weight of 2 lb boxes is 462 lbs
        3x + 2x-48 = 462
             5x = 510
              x = 102 (number of 3 lb. boxes)
           x-24 = 78  (number of 2 lb. boxes)

Cheers,
Stan H.