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 John = new Person("John", 40);
const Mary = new Person("Mary", 35);

Mary.tellMyName();
Mary.tellMyAge();
John.tellMyName();
John.tellMyAge();