This is a Handy Rule of Three that will help you out to solve those little math problems you may encounter in your daily life.
Handy Rule of Three supports the direct and inverse rule of three.
Direct mode C*B/A
If an exam has 30 questions which makes 100%
What percentage makes 24 correct answers?
x= 20*100/30
x= 80
Inverse mode A*B/C:
If making dinner takes 3 hours to 2 people.
How long would it take to 1 person?
x= 3*2/1
x= 6
История обновлений
2.0
2017-01-03
This app has been updated by Apple to display the Apple Watch app icon.
Handy Rule of Three 2.0 is here!
– New user interface
– No intrusive ads
1.2
2014-04-17
Thanks for using Handy Rule of Three!
Now you will be able to toggle from the direct rule of three (C*B/A) to the inverse rule of three (A*B/C). Just press the equal symbol "=" to toggle from mode to another.
Also the apps gets a brand new icon, a prettier font for the numbers, and a faster loading time when the app is first launched!
Direct mode:
If an exam has 30 questions which makes 100%
What percentage makes 24 correct answers?
x= 20*100/30
x= 80
Inverse mode:
If making dinner takes 3 hours to 2 people.
How long would it take to 1 person?