Respuesta :

Answer:

he is 100 yrs old.

Step-by-step explanation:

25x4=100

Answer:

Her grandfather is 100 years old.

Step-by-step explanation:

[work in picture, it says 90 instead of 100]

Ms. young is 25 years old. Her grandpa is 4 times older.

25 * 4 = 100