【實用生產應用app】Handy Rule of Three|最夯免費app

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.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.Direct mode:If an exam has 30 questions which makes 100%What percentage makes 24 correct answers?x= 20*100/30x= 80Inverse mode:If making dinner takes 3 hours to 2 people. How long would it take to 1 person?x= 3*2/1x= 6

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