A price goes up x times y%. How many times must it go down y% to be equal to the base price?
A price goes up x times y%. How many times must it go down y% to be equal to the base price?
What are your thoughts?
Please share your work with us ...even if you know it is wrong.
If you are stuck at the beginning tell us and we'll start with the definitions.
You need to read the rules of this forum. Please read the post titled "Read before Posting" at the following URL:
http://www.freemathhelp.com/forum/announcement.php?f=33
“... mathematics is only the art of saying the same thing in different words” - B. Russell
Try a numerical example. If the base price of 80 goes up by 20%, what's the new price? If then the price goes back down to 80 from the new price, what is the percentage change?
If that does not give you a general formula, try some other numeric examples. If nothing clicks, show us your examples.
Experimentation is frequently how formulas are discovered although, in this case, it can also be discovered by pure algebra.
Bookmarks