No, you misunderstood something, I don't know how you get a negative number but that's wrong. It says how many years ago (past) or in how many years (future). And the answer is always a positive number. Not a kata issue.
The equation for this doesnt make sense. The question says now or in the future. As the son gets older multiplying it by 2 means that number will be larger than the age of the father. Causing a negative interger.
Can we include units used for each variable in the description if they aren't very consistent?
Just out of curiosity, you ask for the answer in centimeters when giving us meters. Why does the solution multiply the distance instead of divide?
No, you misunderstood something, I don't know how you get a negative number but that's wrong. It says how many years ago (past) or in how many years (future). And the answer is always a positive number. Not a kata issue.
The equation for this doesnt make sense. The question says now or in the future. As the son gets older multiplying it by 2 means that number will be larger than the age of the father. Causing a negative interger.