Question 343169
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The word "of" is a multiplication sign.  So 40% (which is 0.40) of (meaning times) some number (let's call it *[tex \Large x]) is (which means equals) 20:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 0.4x\ =\ 20]


So


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ x\ =\ \frac{20}{0.4}]


Only the arithmetic is left.


John
*[tex \LARGE e^{i\pi} + 1 = 0]
My calculator said it, I believe it, that settles it
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