Friday, August 2, 2019

calculation puzzle - Where is Jennifer's husband?



Jennifer is 21 years older than her son Douglas. 6 years from now, Jennifer will be 5 times as old as Douglas.


Question: Where is Jennifer's husband most likely to be right now?



Answer



Let's define $J$=Jennifer and $D$=Douglas.
The problem can be rewritten as:


$J=D+21$
$J+6=5(D+6)$


According to my math, Douglas is $D=(-\frac{3}{4})$ years old, which means $-9$ months. Pregnancy lasts for nine months, so Jennifer's husband is in the bed with her right now.


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