Question

Reversing the digits of ishans age give his father age.The father's age is 4.5 times the ishans age what is the father's age?

Answer 1

Answer:

37

Step-by-step explanation:

Let fathers age = 10x + y

Sons age = 10y + x (As, it is got by reversing digits of fathers age)

At that point

(10x + y) - 1 = 2{(10y + x) - 1}

=> x = (19y - 1)/8

Let y = 3 then x = 7.

For any other y value, x value combined with y value doesnt give a realistic age (like fathers age 120 etc)

So, this has to be solution.Hence fathers age = 73.

Sons age = 37.

Answer 2

Answer:

fathers age = 73

Step-by-step explanation:

Let fathers age = 10x + y

Sons age = 10y + x (As, it is got by reversing digits of fathers age)

At that point

(10x + y) - 1 = 2{(10y + x) - 1}

=> x = (19y - 1)/8

Let y = 3 then x = 7.

For any other y value, x value combined with y value doesnt give a realistic age (like fathers age 120 etc)

So, this has to be solution.Hence fathers age = 73.