Given the rationale, provide a reasonable question and answer. Step-by-step reasoning process: In 4 months, he will lose 3 x 4 = 12 kilograms. So his weight will be 97 – 12 = 85 kilograms.
 The question and answer:
A boxer weighs 97 kg at 4 months from a fight. He is on a diet that allows him to lose 3 kg per month until the day of the fight. How much will he weigh on the day of the fight?
The answer is 85