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src: Add solution to Coding Challenge 3

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	`1`	`+<!DOCTYPE html>`
	`2`	`+<html lang="en">`
	`3`	`+ <head>`
	`4`	`+ <meta charset="UTF-8">`
	`5`	`+ <title>JavaScript Tutorials</title>`
	`6`	`+ </head>`
	`7`	`+`
	`8`	`+ <body>`
	`9`	`+ <h1>Coding Challenge 3</h1>`
	`10`	`+ </body>`
	`11`	`+`
	`12`	`+ <script src="index.js"></script>`
	`13`	`+</html>`

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	`1`	`+`
	`2`	`+// -----------------------------------------------------------------------------`
	`3`	`+// Coding Challenge 2`
	`4`	`+// -----------------------------------------------------------------------------`
	`5`	`+`
	`6`	`+/*`
	`7`	`+John and his family went on a holiday and went to 3 different restaurants.`
	`8`	`+The bills were 124,ドル 48ドル and 268ドル.`
	`9`	`+`
	`10`	`+To tip the waiter a fair amount, John created a simple tip calculator (as a function).`
	`11`	`+He likes to tip 20% of the bill when the bill is less than 50,ドル 15% when the bill is`
	`12`	`+between 50ドル and 200,ドル and 10% if the bill is more than 200ドル.`
	`13`	`+`
	`14`	`+In the end, John would like to have 2 arrays:`
	`15`	`+1) Containing all three tips (one for each bill)`
	`16`	`+2) Containing all three final paid amounts (bill + tip).`
	`17`	`+`
	`18`	`+(NOTE: To calculate 20% of a value, simply multiply it with 20/100 = 0.2)`
	`19`	`+`
	`20`	`+GOOD LUCK 😀`
	`21`	`+*/`
	`22`	`+`
	`23`	`+var bills = [124, 48, 268];`
	`24`	`+console.log(bills);`
	`25`	`+`
	`26`	`+var tips = bills.map(function(amount) {`
	`27`	`+ if (amount < 50) {`
	`28`	`+ return (20 / 100) * amount;`
	`29`	`+ } else if (amount >= 50 && amount <= 200) {`
	`30`	`+ return (15 / 100) * amount;`
	`31`	`+ } else {`
	`32`	`+ return (10 / 100) * amount;`
	`33`	`+ }`
	`34`	`+});`
	`35`	`+console.log(tips);`
	`36`	`+`
	`37`	`+var totals = bills.map(function(bill, index) {`
	`38`	`+ return bill + tips[index];`
	`39`	`+})`
	`40`	`+console.log(totals);`

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