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69 lines
1.6 KiB
Markdown
69 lines
1.6 KiB
Markdown
---
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id: 68cae5b538ff798bbd4da009
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title: "Challenge 71: Tip Calculator"
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challengeType: 29
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dashedName: challenge-71
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---
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# --description--
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Given the price of your meal and a custom tip percent, return an array with three tip values; 15%, 20%, and the custom amount.
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- Prices will be given in the format: `"$N.NN"`.
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- Custom tip percents will be given in this format: `"25%"`.
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- Return amounts in the same `"$N.NN"` format, rounded to two decimal places.
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For example, given a `"$10.00"` meal price, and a `"25%"` custom tip value, return `["$1.50", "$2.00", "$2.50"]`.
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# --hints--
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`calculate_tips("$10.00", "25%")` should return `["$1.50", "$2.00", "$2.50"]`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(calculate_tips("$10.00", "25%"), ["$1.50", "$2.00", "$2.50"])`)
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}})
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```
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`calculate_tips("$89.67", "26%")` should return `["$13.45", "$17.93", "$23.31"]`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(calculate_tips("$89.67", "26%"), ["$13.45", "$17.93", "$23.31"])`)
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}})
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```
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`calculate_tips("$19.85", "9%")` should return `["$2.98", "$3.97", "$1.79"]`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(calculate_tips("$19.85", "9%"), ["$2.98", "$3.97", "$1.79"])`)
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}})
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```
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# --seed--
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## --seed-contents--
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```py
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def calculate_tips(meal_price, custom_tip):
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return meal_price
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```
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# --solutions--
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```py
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def calculate_tips(meal_price, custom_tip):
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meal = float(meal_price[1:])
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custom_percent = float(custom_tip[:-1])
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tips_percent = [15, 20, custom_percent]
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tips = [f"${meal * p / 100:.2f}" for p in tips_percent]
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return tips
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```
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