To be specific, you can find out the missing X in the following kind of situations:
Without trying to educate the user, this App simply provides the
answer to ones "percentage problem".
The App contains three different "templates" by which one can solve any kind of percentage problem!
There are three number-fields.
To use the tool, first pinpoint the the field that contains the unknown number
, and then type in the known numbers in the remaining two number-fields!
In the figure, we have selected the first number
to be unknown, and then we have typed in the numbers 1200 and
250. As a result, the tool determine that the unknown number
must be 20.83 (since 20.83% of 1200 is 250).