Answer
$ 33.3\%$ of crude oil imports came from Mexico and Canada.
$ 66.7\%$ came from the rest of the world.
Work Step by Step
Typical percentage problem:
What percent ($n$, as a decimal number) of (the base amount $y$) is $x?$
Translated:$\quad n\cdot y=x$
---
Here, What percent ($n$, as a decimal number) of ($y=9$) is ($x=3$)$?$
Translated:$\quad n\cdot 9=3$
... divide with $9$
$ y=0.333\qquad$ .... convert to percent notation,
(move the decimal point two places to the right and write a percent symbol.)
$=33.3\%$ of crude oil imports came from Mexico and Canada.
$ 100\%-33.3\%=66.7\%$ came from the rest of the world.
