So your friend just now started thinking about training? Yeah, he should probably cancel the exam and reschedule for 6 months-year out after he's serious about it and has trained for it. It is highly, highly doubtful that he can do more than triple the reps he can currently do in under a week. Noob gains, maybe he could do a couple more if he worked hard at it, but going from 3-10 is not possible.
Also, cut off his legs.
Holy shit, just did the conversion from metric.. He's 6'3" and 132 pounds? He should not be a firefighter. His BMI is 16.5, so extremely underweight.