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Comment on Some Percent of Something
Hello,
I'm not clear why if you plugged in values for x and y. Let's say 4 and 5 then you wouldn’t end up with different values for column A and column B.
Hi Kankinza,
Hi Kankinza,
Given:
QUANTITY A: x percent of y
QUANTITY B: y percent of x
If we let x = 4 and y = 5 (as you suggest), we get the following:
QUANTITY A: 4% of 5
QUANTITY B: 5% of 4
Rewrite as:
QUANTITY A: (4/100)(5)
QUANTITY B: (5/100)(4)
Evaluate:
QUANTITY A: 20/100
QUANTITY B: 20/100
The two quantities are equal.
In fact, if we plug in ANY values for x and y, we'll find that the two quantities are always equal.
Does that help?
Cheers,
Brent
Can we assume this as a rule?
Yes, we can even prove it.
Yes, we can even prove it.
x% of y = (x/100)(y) = xy/100
y% of x = (y/100)(x) = xy/100
Cheers,
Brent