12 is 80% of___
Please show work.
Thanks
2007-01-17 14:06:06 · 5 answers · asked by bugzaper 3 in Science & Mathematics ➔ Mathematics
12 is 80% of___
Translate into math goes like this:
"is" menas equals
"of" means multiply
the "____" means an unknown, usually 'x'
% means 'per 100', or divide by 100.
12 is 80% of___
==> 12 = (80/100)*x
Ok...now you solve for x, and that will be your answer. You have to learn to do these, or it will never make sense to you. I showed you how to set it up, now all you have to do is the most basic of algebra.
And if you give the points to someone else who shows you ALL of it....that's fine. I don't want the points....I don't need the points.....I already know how to do this.
2007-01-17 14:12:33 · answer #1 · answered by Anonymous · 0⤊ 0⤋
12 /x = 80/100
The numerator is the part and the denominator is the whole.
If you use cross multiplication you get
80x = 1200
Now solve for x by dividing by 80.
x=15
12 is 80% of 15.
I hope this helps.
2007-01-17 14:18:23 · answer #2 · answered by tval_friedly 2 · 0⤊ 0⤋
80% = 0.80 = 8/10
0.80x=12
10/8(8/10x) = 12(10/8)
x=120/8
x=15
To check your answer:
15 x 80% = 12
2007-01-17 14:19:08 · answer #3 · answered by Anonymous · 0⤊ 0⤋
12 = 80% * x
12 = .8x
12 / .8 = x
15 = x
2007-01-17 14:09:33 · answer #4 · answered by jimbob 6 · 0⤊ 0⤋
is/of= #/100
12/x=80/100
80x= 1200
x=15
2007-01-17 14:10:19 · answer #5 · answered by 7 · 0⤊ 0⤋