16. You want to decorate around the top of a jar with ribbon. The length around the jar is

18 inches.

a. How many feet of ribbon do you need?

b. The ribbon costs $4.80 per yard. How much does it cost per foot?

c. According to how much ribbon you need, how much will it cost?

Answer: A) We need 1 1/2 ft of ribbon

B) $1.60 per foot

C) $2.40 is the total

Step-by-step explanation:

So if the length around the jar is 18 inches and we know that there is 12 inches in a foot, and 3 feet in a yard and $ 4.80 per every 3 feet. These become basis numbers. 18in - 12inch = 6 inch. So now we have 1 1/2 feet of ribbon to cover the circumference of the jar. Now we are left to answer the second question how much does it cost per foot? We can divide 4.80 by 3 to see the total cost of a foot of ribbon. That turns to 1.60 per foot. We divide that by two to cover the 6 inches. And the answer is $2.40 for 1 1/2 feet of ribbon