Arithmetic Aptitudes › Problems on Ages › Question #4424
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QIf John's age after 10 years will be 5 times his age 5 years ago, what is his present age?

ID: #4424 Problems on Ages 134 views
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#4424Q ID
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Problems on AgesTopic
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  • A 6 ✔ ✖
  • B 7.7 ✔ ✖
  • C 8.7 ✔ ✖
  • D 10 ✔ ✖
Correct Answer: Option C

Explanation

 If John's present age is represented by x, and his age 5 years ago is x-5,
 and his age in 10 years will be x+10,
 and we are given that John's age in 10 years will be 5 times his age 5 years ago,
 we can set up the equation (x+10)=5(x-5). 

Solving this equation gives us x+10=5x-25, or 4x=35,
 which means John's present age is 8.75 years.

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