30 lines
1.4 KiB
Markdown
30 lines
1.4 KiB
Markdown
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# Hints
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## General
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- Read about basic arithmetic in the official [Getting Started guide][getting-started-basic-arithmetic].
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- Browse the [`Float`][float-functions] and [`Kernel`][kernel-arithmetic-operators] modules to learn about functions and operators that work with floats.
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## 1. Calculate the daily rate given an hourly rate
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- [Basic arithmetic operations][kernel-arithmetic-operators] where one argument is an integer, and the other is a float, will return a float.
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## 2. Calculate a discounted price
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- [Basic arithmetic operations][kernel-arithmetic-operators] where one argument is an integer, and the other is a float, will return a float.
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## 3. Calculate the monthly rate, given an hourly rate and a discount
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- There is a [built-in function][kernel-trunc] for changing floats to integers.
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- There is a [built-in function][float-ceil] for rounding floats up.
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## 4. Calculate the number of workdays given a budget, hourly rate and discount
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- There is a [built-in function][float-floor] for rounding floats down with desired precision.
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[getting-started-basic-arithmetic]: https://elixir-lang.org/getting-started/basic-types.html#basic-arithmetic
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[kernel-arithmetic-operators]: https://hexdocs.pm/elixir/Kernel.html#*/2
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[kernel-trunc]: https://hexdocs.pm/elixir/Kernel.html#trunc/1
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[float-functions]: https://hexdocs.pm/elixir/Float.html#functions
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[float-ceil]: https://hexdocs.pm/elixir/Float.html#ceil/2
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[float-floor]: https://hexdocs.pm/elixir/Float.html#floor/2
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