en.javascript.info/1-js/4-data-structures/8-array-methods/8-average-age/task.md

importance: 4

---

Get average age

Write the function getAverageAge(users) that gets an array of objects with property age and gets the average.

The formula for the average is (age1 + age2 + ... + ageN) / N.

For instance:

let john = { name: "John", age: 25 }
let pete = { name: "Pete", age: 30 }
let mary = { name: "Mary", age: 29 }

let arr = [ john, pete, mary ];

alert( getAverageAge(arr) ); // (25+30+29)/3 = 28