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?
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Solution:
J=D+21
J+6=5(D+6)
According to my math, Douglas has −3/4 years, which means -9 months. Pregnancy lasts for nine months, so Jennifer’s husband is in the bed with her right now.
Sauce: http://puzzling.stackexchange.com/questions/10542/where-is-jennifers-husband