Question

A major convention center, whose floors are covered by a square carpet tiles with side lengths of 9 inches laid out in a 48 by 96 array, held a wild conference over the weekend. A local cleaning company was hired to clean the carpet tiles, given an offer of $0.05 per carpet square. The cleaners accepted the job, but not until after the convention center agreed to their counter of $0.10 per square foot. The cleaners were happy, because they knew they would be getting paid more than the convention center originally offered. How much more exactly?
A. $11.52
B. $28.80
C. $115.20
D. $201.60

Answer 1

Answer:

option B

$28.80

Step-by-step explanation:

Given the question,

side length of one square tile = 9 inches

area of square tile = l² = 9² = 81 inches²

Step1

There are 48(96) = 4608 carpet tiles, so the company was making 4608($.05) = $230.40.

Step2

Now, the company countered with square feet. We have a total of 4608(81) = 373,248 square inches.

1 square foot = 144 square inches.

373,248/144 = 2592 square ft.

2592($.10) = $259.20

$259.20 - $230.40 = $28.80