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Choose the three equivalent forms of 6.375.

A. six and three-eighths, 6.375%, fifty-one eighths
B. six and three seventy-fifths, 6.375%, thirty-seven sixths
C. six and three seventy-fifths, 637.5%, thirty-seven sixths
D. six and three-eighths, 637.5%, fifty-one eighths

Correct answer:

x = D

Step-by-step explanation:

$$\begin{gathered} a=6.375 \\ {a}_1=\frac{6375}{1000}=\frac{51}{8}=6\frac{3}{8}=6.375 \\ p=100\cdot a=100\cdot 6.375=\frac{1275}{2}=637\frac{1}{2}=637.5\% \\ x=D \end{gathered}$$

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