Interesting Finding Over The Net

Joan is 21 years older than her son . In 6 years from now Joan will be 5 times as old as her son.

Question: Where is Joan’s Husband right now?

There is a mathematical solution for this. Try to answer this question and put your answer in the comments.

Answer:
Joan (Mother ‘M’) is 21 years older than Tony (Child ‘C’).
M = C + 21
In 6 years from now the mom will be 5 times as old as the child.
M + 6 = ( C + 6 ) x 5
C + 21 + 6 = ( C + 6) x 5
C + 27 = 5C + 30
-3 = 4C
C = -3/4

The child is -3/4 year old, that’s -9 months.
Child will be born in 9 months. So, you can guess where is Joan’s husband right now