Question 108130
For six consecutive years a man's age was a multiple of his granddaughter's age. How old was each during the sixth year?
:
We know that his age has to be a multiple of 5, during this 6 year period:
: 
Say granddaughter is 5 when Grandpa is 65

1, 2, 3, 4, 5, 6 
Grandpa
61,62,63,64,65,66 in his 6th year