class Person {
    constructor(name, age){
        this.name = name;
        this.age = age;
    }
    tellMyName(){
        return `Ì am ${this.name}`
    }
    tellMyAge(){
        return `I am ${this.age} years old`
    }
}

const john = new Person('John', 40);
const mary = new Person('Mary', 35);

john.tellMyName();
john.tellMyAge();
mary.tellMyName();
mary.tellMyAge();