Question

Suppose that 22 inches of wire costs 66 cents. At the same rate, how much (in cents) will 49 inches of wire cost?

Answer 1

Answer: 147 cents

Explanation:

Unit rate is what we need here: i.e., how much does 1 inch of wire cost?

22in --> 66cents

1 in --> 66/22 = 3

3 cents per inch!

so 49 inches will cost 49 x 3 = 147 cents