Only boxes less than 4 1/4 feet wide will fit though a doorway. which measurements show the width of three boxes that will fit through the doorway?

A. 48 inches, 51 inches, 54 inches

B. 50 inches, 48 inches, 49 inches

C. 42 inches, 47 inches, 51 inches

D. 52 inches, 54 inches, 55 inches

You are given a measurement in feet and asked to compare that to measurements in inches. It is convenient to convert the measurement in feet to a measurement in inches to make the comparison easier. (There are other ways to do the comparison, but this way may be the least work.)

We need to start with a conversion factor.

1 foot = 12 inches

Multiplying by 4 1/4 gives

4 1/4 feet = (48 + 3) inches = 51 inches

The set of measurements that are all less than 51 inches is

... B. 50 inches, 48 inches, 49 inches