Question

When Kylie asked her grandfather how old he was, he replied, "the two digits in my age are the ages of your brother isaac and sister kendra. if you add their ages to mine, the sum is 83." how old is kylie's grandfather

Answer 1

Answer:

Kylie's grandfather is 73 years old.

Step-by-step explanation:

Let the first digit in Kylie's grandfather's age be x, which is the age of Isaac

Let the second digit in Kylie's grandfather's age be y, which is the age of Kendra.

Therefore from the given information we can say that

(10x + y) + x + y = 83

therefore 11x + 2y = 83

Let us take x  = 7 then we get  77 + 2y = 83 $\Rightarrow$ y = 3

Therefore we can say Issac's age is 7

and Kendra's age is 3

and the age of Kylie's grandfather is 73.