You would need 16 because 3 × 4 = 12 and you need to do the same to the blue so you would do the equation 4 × 4 = ? which is 16.
68.5. You take 62 and divide it by the percentage as a decimal, .905. 62 / .905 = 68.5.
Answer: One pound of cinnamon costs $12.80
