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63 lines
1.5 KiB
Markdown
63 lines
1.5 KiB
Markdown
---
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id: 68cae5b538ff798bbd4da009
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title: "Challenge 71: Tip Calculator"
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challengeType: 28
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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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`calculateTips("$10.00", "25%")` should return `["$1.50", "$2.00", "$2.50"]`.
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```js
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assert.deepEqual(calculateTips("$10.00", "25%"), ["$1.50", "$2.00", "$2.50"]);
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```
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`calculateTips("$89.67", "26%")` should return `["$13.45", "$17.93", "$23.31"]`.
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```js
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assert.deepEqual(calculateTips("$89.67", "26%"), ["$13.45", "$17.93", "$23.31"]);
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```
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`calculateTips("$19.85", "9%")` should return `["$2.98", "$3.97", "$1.79"]`.
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```js
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assert.deepEqual(calculateTips("$19.85", "9%"), ["$2.98", "$3.97", "$1.79"]);
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```
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# --seed--
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## --seed-contents--
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```js
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function calculateTips(mealPrice, customTip) {
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return mealPrice;
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}
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```
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# --solutions--
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```js
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function calculateTips(mealPrice, customTip) {
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const meal = parseFloat(mealPrice.slice(1));
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const customPercent = parseFloat(customTip.slice(0, -1));
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const tips = [15, 20, customPercent];
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return tips.map(percent => {
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const amount = (meal * percent / 100).toFixed(2);
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return `$${amount}`;
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});
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}
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```
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