One pound costs $0.30
Given:
Price = 1.05
Weight = 3 1/2 pounds
To get the price per pound, we need to divide the total price by its total weight in pounds. But, we must first convert the mixed fraction into an improper fraction.
3 1/2 = ((3*2)+1)/2 = (6+1)/2 = 7/2
1.05 ÷ 7/2
dividing fractions: Get the reciprocal of the 2nd fraction and multiply it to the first fraction.
1.05 * 2/7 = 2.10 / 7 = 0.30 price per pound.