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 pers1 = new person ('John', 40);
const pers2 = new person ('Mary', 35);

pers1.tellMyName();
pers1.tellMyAge();
pers2.tellMyName();
pers2.tellMyAge();