class Person {
    constructor(name, age) {
        this.name = name
        this.age = age
    }
    tellMyName () {
        console.log(`I am ${this.name}`);
    }
    tellMyAge () {
        console.log(`I am ${this.age} years old`);
    }
}
const Person1 = new Person ('John', 40);
const Person2 = new Person ('Mary', 35);

Person1.tellMyName();
Person1.tellMyAge();
Person2.tellMyName();
Person2.tellMyAge();