Maths - MY NAUGHTY SON

My Son is Naughty

Jack and Ray were at the rugby. Ray’s team was winning 

so Jack decided to give Ray a problem to deflate his ego a 

bit. So Jack said “Did you know that today is my three 

sons’ birthday?” “How old are they?” Ray asked taking 

the bite. “I’ll give you a hint. The product of their ages is 

36 and the sum of their ages is 13,” Jack replied. “That’s 

no help,” said Ray. So Jack weakened and gave him 

another clue. “O.K. My youngest son is very naughty.”

“Nothing to it,” exclaimed Ray and he told Jack the 

correct ages of his sons. 

How did Ray figure out the correct answer and what are 

Jack’s sons’ ages?

We made a movie to explain our ANSWER.

Jacks Sons from Team 5 PES on Vimeo.