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

    tellMyName() {
        return this.name;
    }

    tellMyAge() {
        return this.age;
    }

    isPerson () {
        console.log (`I am ${this.name} and I am ${this.age} years old`)
    }
}

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

person1.isPerson();
person2.isPerson();