Originally posted by Kongwei Ying Two fathers and two sons went out to have dinner. All meals at where they were eating costed $5.How did they only have to pay $15?
They were only three. A man, his son and his son. Two sons, two fathers.
Originally posted by Kongwei Ying Two fathers and two sons went out to have dinner. All meals at where they were eating costed $5.How did they only have to pay $15?