Question

A contractor purchases 4 dozen pairs of padded work gloves for ​$57.12. He incorrectly calculates the unit price as ​$14.28 per pair for the expense report. What is the correct unit​ price? What is the​ error?

Answer 1

1 dozen = 12 units

7 dozen = 12 × 7 = 84 units

Correct unit price = 103.32 ÷ 84 = $1.23

The contractor's unit price incorrect because he did 103.32 ÷ 7 dozen.

The price he calculated is for the price for 1 dozen, not 1 unit