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());