You are wrapping boxes for a fund-raiser. You have 80 large boxes. You need 2 and three-fourths feet of ribbon for each large box. Each roll of ribbon has 50 feet of ribbon.
a. Estimate the number of feet of ribbon you will need. Show your work.
b. Find the exact number of feet of ribbon you will need. Show your work.
c. How many rolls of ribbon will you need? Explain your answer.
a. To estimate the number of feet of ribbon we need, we can round 2 and three-fourths to 3 feet for each box. So, for 80 large boxes, we would need approximately 80 x 3 = 240 feet of ribbon.
b. To find the exact number of feet of ribbon we will need, we can use the following calculation:
80 x 2.75 = 220 feet of ribbon
c. Each roll of ribbon has 50 feet of ribbon, so we can divide the total number of feet needed by the amount of ribbon on each roll:
220 ft ÷ 50 ft/roll = 4.4 rolls
Since we cannot buy a fraction of a roll of ribbon, we will need to purchase 5 rolls of ribbon to wrap all 80 boxes.