Question

a grandfather is 8 times as old as his grandson. also, he is 63 years older than him. find their present age.

Answer 1

Answer: Age of grandson is 9 years.  Age of grandfather is 72 years.

Step-by-step explanation:

Let the age of grandson be x.

According to question,

    8x = x + 63

=> 8x - x = 63

=> 7x = 63

=> x = 63÷7

=> x = 9       (age of grandson)

Age of grandfather = x + 63 = 9 + 63 = 72

Answer 2

Answer:

Age of grandson is 9 years

Age of grandfather is 72 years .

Step-by-step explanation:

Let the age of grandson be x

according to the question ,

8x =x +63

8x- x=63

7x =63

x=63÷7

x= 9

Age of grandfather = x +63 =9 +63=72

Hence ,the age of  the

grandson = 9 years

grandfather =72 years