freecodecamp--freecodecamp/curriculum/challenges/english/blocks/daily-coding-challenges-javascript/68cae5b538ff798bbd4da009.md

id, title, challengeType, dashedName

id	title	challengeType	dashedName
68cae5b538ff798bbd4da009	Challenge 71: Tip Calculator	28	challenge-71

--description--

Given the price of your meal and a custom tip percent, return an array with three tip values; 15%, 20%, and the custom amount.

• Prices will be given in the format: "$N.NN".
• Custom tip percents will be given in this format: "25%".
• Return amounts in the same "$N.NN" format, rounded to two decimal places.

For example, given a "$10.00" meal price, and a "25%" custom tip value, return ["$1.50", "$2.00", "$2.50"].

--hints--

calculateTips("$10.00", "25%") should return ["$1.50", "$2.00", "$2.50"].

assert.deepEqual(calculateTips("$10.00", "25%"), ["$1.50", "$2.00", "$2.50"]);

calculateTips("$89.67", "26%") should return ["$13.45", "$17.93", "$23.31"].

assert.deepEqual(calculateTips("$89.67", "26%"), ["$13.45", "$17.93", "$23.31"]);

calculateTips("$19.85", "9%") should return ["$2.98", "$3.97", "$1.79"].

assert.deepEqual(calculateTips("$19.85", "9%"), ["$2.98", "$3.97", "$1.79"]);

--seed--

--seed-contents--

function calculateTips(mealPrice, customTip) {

  return mealPrice;
}

--solutions--

function calculateTips(mealPrice, customTip) {
  const meal = parseFloat(mealPrice.slice(1));
  const customPercent = parseFloat(customTip.slice(0, -1));
  const tips = [15, 20, customPercent];

  return tips.map(percent => {
    const amount = (meal * percent / 100).toFixed(2);
    return `$${amount}`;
  });
}