Carolyn wants to buy one pound of grapes the price per pound is 3 1/2 pounds for $1.05. how much will one pound cost show your work

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.

40 & 50 in the right corner are the complementary angles as when placed in a sum (added together) they make 90°