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A woman and her grandson have the same birthday. For six consecutive birthdays, she is an integral multiple of his age. How old is the grandmother at the sixth of these birthdays?

 May 10, 2015

Best Answer 

 #1
avatar+129842 
+13

There may be other acceptable answers here, but......I think it's possible that she is 66....

The grandson is 1 when she is 61  ......61 times his age

When he is 2, she is 62.......31 times his age

When he is 3, she is 63..... 21 times his age

When he is 4, she is 64.....16 times his age

When he is 5, she is 65..... 13 times his age

When he is 6, she is 66,.....11 times his age

 

And that's  six birthdays  !!!    {It's also called....."guess and check'.....LOL!! }

 

  

 May 10, 2015
 #1
avatar+129842 
+13
Best Answer

There may be other acceptable answers here, but......I think it's possible that she is 66....

The grandson is 1 when she is 61  ......61 times his age

When he is 2, she is 62.......31 times his age

When he is 3, she is 63..... 21 times his age

When he is 4, she is 64.....16 times his age

When he is 5, she is 65..... 13 times his age

When he is 6, she is 66,.....11 times his age

 

And that's  six birthdays  !!!    {It's also called....."guess and check'.....LOL!! }

 

  

CPhill May 10, 2015
 #2
avatar+118659 
+5

Are G&C s like G&T s Chris ?

Mmm both sound ok but I think I'd rather a G&T       

 May 10, 2015
 #3
avatar+129842 
0

LOL!!!.....I'll take the G and T's. too......!!!!

 

  

 May 11, 2015
 #4
avatar
0

56+

 Jan 31, 2017

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