Question

Which shows the best path to find the number of centimeters in 1 yard?

A. yards -> inches -> centimeters
B. yards -> feet -> centimeters
C. centimeters -> feet -> inches
D. centimeters -> feet -> yards

Answer 1

A

Explanation:

took the test

Answer 2

I like A the best; B also works.

Explanation:

Choices C and D do not result in centimeters, so are useless for this problem.

Though you can use the conversion factor 1 ft = 30.48 cm, I find it convenient to remember the conversion 1 in = 2.54 cm. The first factor with choice B gets you there:

... 1 yd = 3 ft = 3×30.48 cm = 91.44 cm . . . . . . can do in your head

As does choice A:

... 1 yd = 36 in = 36×2.54 cm = 91.44 cm . . . . . probably requires a calculator

The path you understand and that works for you is the "best" path.