Price of 12 pounds of trail mix = 12 x $4.20 = $50.40 Let the number of pounds of skittles and trail mix be x, number of pounds of skittles = 12 - x price of pounds of skittles = $16.70(12 - x) = $200.40 - 16.7x total amount = 10.93x 200.40 - 16.7x + 50.40 = 10.93x 250.80 = 27.63x x = 10 (nearest whole number) the minimum number of pounds of skittles is 10.