Question

Emma is 10 years old. She asked her father how old he was. Her father answered: "When you will be my age, I will be 70." How old is Emma's father?

Answer 1

He is 40

Explanation:

She is 10. In 30 years she will be 40. In 30 years, he will be 70. he is 40 add 30 years then he will be 70.