Browse Teasers
Search Teasers

## How Old, Again?

Math brain teasers require computations to solve.

 Puzzle ID: #49426 Fun: (2.76) Difficulty: (2.31) Category: Math Submitted By: fishmed

Suppose I am a grandfather. My grandson is about as old in days as my son is in weeks. He is also as many months old as I am in years. Together, the three of us are 140 years old. How old am I?

## What Next?

See another brain teaser just like this one...

Or, just get a random brain teaser

If you become a registered user you can vote on this brain teaser, keep track of
which ones you have seen, and even make your own.

 RRAMMOHAN Oct 07, 2012 Very cleverly worded. A good one. Took a few minutes to solve. SaraGrace Aug 01, 2013 Well done and tricky Streuther Dec 02, 2013 I took "My grandson is about as old in days as my son is in weeks. He is also as many months old as I am in years." to mean MY SON is as many months old as I am in years...but when that gave my age as being over 140 years old, I reread the question and got the correct anwer Proph Jan 06, 2014 perfect :-P Jimmygu3 Feb 23, 2014 My way to solve: Say grandson is 1. Son would be 7 and grandfather 12. Adds up to 20. So multiply everything by 7 to make the sum 140: 7, 49, 84. applejuicefool Sep 26, 2015 Since the son is as many weeks old as the grandson is days old, then S = 7Gs. Likewise, the grandfather is as many years old as the grandson is months old, so G = 12 Gs. So 12Gs + 7Gs + Gs = 140, 20Gs = 140, Gs = 7. 7Gs = 49, and 12Gs = 84.