class Person {
    constructor(name, age) {
        this.name = name,
        this.age = age
    };

    tellMyName() {
        return `I am ${this.name}`;
    };

    tellMyAge() {
        return `I am ${this.age} years old`
    };
};

const person1 = new Person('John', 40);
const person2 = new Person('Mary', 35);

console.log(person1.tellMyName());
console.log(person1.tellMyAge());

console.log(person2.tellMyName());
console.log(person2.tellMyAge());