Nanu's Grandfather's age is a 2 digit number and her father's age is reverse of her grandfather's age. Nanu's age is 4 times the difference in age between her grandfather and her father. What is Nanu's age.
answer 9 years
let Nanu's father's age be "ab"
So, grandfather's age is "ba"
Let Nanu's age be "x"
Given (10b + a ) - (10a + b) = 4 x
or, 9(b - a) = 4x
Since a,b and x are whole numbers
b - a will be equal to 4
and x will be equal to 9
so, that the product of the numbers = 36 on both LHS and RHS
SO, Nanu's age is 9 years.
answer 9 years
let Nanu's father's age be "ab"
So, grandfather's age is "ba"
Let Nanu's age be "x"
Given (10b + a ) - (10a + b) = 4 x
or, 9(b - a) = 4x
Since a,b and x are whole numbers
b - a will be equal to 4
and x will be equal to 9
so, that the product of the numbers = 36 on both LHS and RHS
SO, Nanu's age is 9 years.
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