31% of what is 37 miles?

1 answer:

8 0

Let's say is "x", so "x" is the 100%, and we know that 37 is the 31%, so, what's "x"?

$\bf \begin{array}{ccll}
amount&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
37&31\\
x&100
\end{array}\implies \cfrac{37}{x}=\cfrac{31}{100}\implies \cfrac{37\cdot 100}{31}=x$

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