2739. Total Distance Traveled

class Solution {
public:
    int distanceTraveled(int mainTank, int additionalTank) {    
        int ans = 0;
        while(mainTank >= 5 && additionalTank != 0)
        {
            ans += 10*5;
            mainTank -= 5;
            mainTank +=1;
            additionalTank --;
        }

        ans += mainTank*10;

        return ans;

    }
};