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Formula of solving percent increase and decrease
- Thread starter Glenedia
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Glenedia said:Tuition at a local college increased from $6890 in 2002 to $8215 in2006 what was the percent increase? ( do not know formula for solving percent increase and decrease,taxes, commisions, markup,discount,simple and compound interest.)
Hi Glenedia,
To find the percent of increase, first find out how much it increased.
\(\displaystyle 8215-6890=1325\)
Then make a ratio of that increase to the original tuition cost and convert to percent.
\(\displaystyle \dfrac{1325}{6890}=.1923 \:\times\: 100 = 19.23\%\)
masters said:Glenedia said:Tuition at a local college increased from $6890 in 2002 to $8215 in2006 what was the percent increase? ( do not know formula for solving percent increase and decrease,taxes, commisions, markup,discount,simple and compound interest.)
Hi Glenedia,
Then make a ratio of that increase to the original tuition cost and convert to percent.
\(\displaystyle \dfrac{1325}{6890}=.1923 \:\times\: 100 = 19.23\% . . . . . . . . . This \ is \ not \ true.\)
\(\displaystyle 0.1923 \:\times\: 100 \% = 19.23 \%\)
You are to be multiplying by a form of \(\displaystyle \ 1, \\) not \(\displaystyle 100.\)
lookagain said:masters said:Glenedia said:Tuition at a local college increased from $6890 in 2002 to $8215 in2006 what was the percent increase? ( do not know formula for solving percent increase and decrease,taxes, commisions, markup,discount,simple and compound interest.)
Hi Glenedia,
Then make a ratio of that increase to the original tuition cost and convert to percent.
\(\displaystyle \dfrac{1325}{6890}=.1923 \:\times\: 100 = 19.23\% . . . . . . . . . This \ is \ \rlap{///}not \ true.\)
\(\displaystyle 0.1923 \:\times\: 100 \% = 19.23 \% \text{ This is not true}\) If you multiply by 100%, that's the same as multiplying by 1. No way you get 19.23 that way. Besides, posts like this are confusing to the OP. That's my opinion. Feel free to make it yours.
You are to be multiplying by a form of \(\displaystyle \ 1, \\) not \(\displaystyle 100.\)
Picky, picky!
\(\displaystyle \dfrac{1325}{6890}=.1923 \Longrightarrow .1923 \:\times\: 100 = 19.23 \text{ per hundred } = \frac{19.23}{100}=19.23\%\)
% means "per hundred".
masters said:lookagain said:
\(\displaystyle \dfrac{1325}{6890}=.1923 \:\times\: 100 = 19.23\% . . . . . . . . . This \ is not \ true.\)
\(\displaystyle 0.1923 \:\times\: 100 \% = 19.23 \% \text{ This is not true}\) If you multiply by 100%, that's the same as multiplying by 1.
You did not multiply by 100%; I was the one who corrected you on that. No way you get 19.23 that way. Besides, posts like this are confusing to the OP.
No, your post was/is wrong, so **you** are confusing the OP. And it's not the first time in a post that I have read this error.
There is no opinion about it; but it is fact. When you are corrected, accept it, and don't type incorrect strikes over the word "not"
as the "not" describes a correct correction.
You are to be multiplying by a form of \(\displaystyle \ 1, \\) not \(\displaystyle 100.\)
Picky, picky! . . . . . Nothing is "picky" about it. If you don't include the percent symbol, it's wrong.
If you do include the percent symbol, it's correct. Feel free to catch up to this correct use of arithmetic.
\(\displaystyle \dfrac{1325}{6890}=.1923 \Longrightarrow .1923 \:\times\: 100 = 19.23 \text{ per hundred } = \frac{19.23}{100}=19.23\%\)
% means "per hundred".
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My final comment on this....
http://www.aaamath.com/g5_61ex1.htm
http://cstl.syr.edu/fipse/decunit/percent/percent.htm
http://www.bellaonline.com/articles/art58722.asp
http://www.helpalgebra.com/onlinebook/percents.htm "To convert a decimal to a percent"
http://www.mindbites.com/lesson/1257-pr ... -a-percent "Dr. Edward Burger"
http://www.moletv.org.uk/watch.aspx?v=ZPF4X
.
.
.
and so on.
No, they are NOT all correct, Denis. If you're going to post stupid posts, then you're a fool.Denis said:BUT BUT Masters, those 6 links are all wrong: only LookAgainst (a legion in his own mind) is correct.
You're a subpar mathematician, as is masters, and you deflect by changing the subject
to the critiquer, because you have NO argument.
Now ... go away until you have a post that counts. Yours did not count.
When you're insecure, then you attack the critiquer. Do you want to delete your post and
strengthen this thread?
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