Hello all, I have a problem here that seems horribly simple, but when I input my answer, I get it incorrect.
The equation my teacher gave for elasticity is:
(%change in quantity demanded)/(%change in price)
It may be that I made a typo when inputting my answer but I'd rather not take a chance. Problem is attached as a screenshot.
All help is greatly appreciated.
Note: This is not a test for school, but a quiz in which we receive three attempts.