【實用教育app】If Then Calculator|最夯免費app

If Then Calculator is not a calculator as we know it. It is designed only for calculating proportions.

It simply gets you the value of ? in this equation:

"If X Foo equals to Y bla, then Z Foo equals to ? bla"

It works for 2 ways of proportions: Direct and inverse.

For example when you make a calculation about prices, the result usually increases like this:

If 2 apples cost 10 bucks, 5 apples cost how many bucks?

The app finds 25 bucks here (which is greater than 10).

But when you make a calculation for ex. about speed, the result decreases like this:

If 3 workers finish the job in 15 days, 9 workers will finish in how many days?

The app finds 5 days here (which is less than 15).

Simple but useful, all free.

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免費玩If Then Calculator App

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