# Math

posted by .

21 is (66 and 2/3)% of what number?

I believe the answer is 14.
is it right?

• Math -

No. 14 is 66 2/3 of 21

0.666667x = 21

• Math -

this is confusing :(

this is how I am solving.
66 2/3 12
------- = -----
100 W

so i mulitiplyed 100x12= 2100.
and from here I don't know how to insert 66 2/3 into calculator.

2100 divided by 66.667?

14, 3.17, 315 and 31.5

• Math -

66 2/3% = 200/300 = 2/3

so just like Ms Sue stated ...

(2/3)x = 21
times 3
2x = 63
divide by 2
x = 31.5

Where did you get the 12 from in your solution?
(dyslexia) ??

(66 2/3) / 100 = 21/w

it would have worked:

(200/3) / 100 = 21/w
(200/3)w = 100(21)
(200/3)w = 2100
times 3
200w = 6300
w = 6300/200 = 31.5

• Math -

0.666667x = 21

x = 21/0.666667

x = 31.5

• Math -

oh, okay.
now I get it. thanks!!!

• Math -

You're welcome.

I'm glad you've got it. :-)

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