Final answer:
To find out how many jars of peanut butter are needed for 12 lbs, divide 12 lbs by the jar size of 1.25 lbs, which results in 9.6 and rounds up to 10 jars. The coach should buy 10 jars to get at least 12 lbs of peanut butter.
Step-by-step explanation:
The question is about determining how many jars of peanut butter a coach needs to buy to have 12 lbs in total, given that each jar contains 1 1/4 lbs. To find the number of jars needed, you divide the total amount of peanut butter required by the amount in each jar.
Calculation steps:
- Express the mixed number 1 1/4 lbs as an improper fraction or a decimal, which is 1.25 lbs.
- Divide the total amount needed, 12 lbs, by the amount per jar, 1.25 lbs.
- The resulting calculation is 12 / 1.25 = 9.6.
- Since you cannot purchase a fraction of a jar, round up to the nearest whole number. Therefore, the coach needs to buy 10 jars of peanut butter.