Question

A public school district furnishes pencils to its elementary students. The pencils the secretary orders from the district warehouse each year are packaged in boxes that contain one gross (12 dozen=1 gross) pencils. The average use of pencils is 9.3 pencils per student over the school year. If the school’s enrollment is 812 students, what is minimum number of boxes of pencils that should be ordered? Use dimensional analysis.

Answer 1

Minimum number of boxes order is 52.4 boxes.

Given that;

Average use of pencil per student = 9.3 pencil per year

Number of student in school = 812 students

Find:

Minimum number of boxes order

Computation:

Total number of pencil used in year = 812 × 9.3

Total number of pencil used in year = 7,551.6 pencils

12 dozen = 1 gross

So,

Number of pencils in 1 box = 12 × 12

Number of pencils in 1 box = 144 pencils

Minimum number of boxes order = 7551.6 / 144

Minimum number of boxes order = 52.4 boxes

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