class person {
        constructor(name, age) {
            this.name = name;
            this.age = age;
        }
        tellMyName() {
            return `I am ${this.name}`;
        }
        tellMyAge() {
            return `I am ${this.age} old`;
        }
    }

    const pers1 = new person('John', 40);
    const pers2 = new person('Mary', 35);
    console.log(pers1.tellMyName());
    console.log(pers1.tellMyAge());
    console.log(pers2.tellMyName());
    console.log(pers2.tellMyAge());