[Updated] Goldman Sachs Aptitude Test Questions and Answers
Practice List of TCS Digital Coding Questions !!!
Take 50+ FREE!! Online Data Interpretation Mock test to crack any Exams.

Quantitative Aptitude :: Problems on Ages - Discussion

Home > Quantitative Aptitude > Problems on Ages > MCQs Questions Discussion

31 / 73

Choose the correct option.

When you reverse the digits of age of father you will get the age of son. one year ago the age of father was twice that of son's age. What are the current ages of father and son?

A73 & 37

B73 & 45

C65 & 37

DNone of these

Answer: Option (Login/Signup)

Show Explanation

When you reverse the digits of age of father you will get the age of son.

10x y = father's age

10y x = son's age

:

one year ago the age of father was twice that of son's age.

10x y - 1 = 2(10y x - 1)

10x y - 1 = 20y 2x - 2

10x - 2x = 20y - y - 2 1



8x = 19y - 1

x = 19/8y - 1/8

Only one set of single digit integers will satisfy this equation

y = 3; x = 7





Current ages of father and son

Dad is 73, son is 37



Check one year ago

Dad is 72, son is 36, half Dad's age

Asked In :: Infosys

Post Your Answer Here:     

Reply    
Rate This: +0 -0
    Report


Report Error

Please Login First Click Here