#include<bits/stdc++.h>
using namespace std;
#define max_v 2050
double ans[max_v];
int main()
{
    double va,vb,l,d;
    int num,t,i,j;
    scanf("%d",&t);
    while(t--)
    {
        scanf("%lf %lf %lf %d",&l,&va,&vb,&num);
        for(i=1,j=1;j<=1000;j++)
        {
            ans[i++]=(2.0*j-1.0)*l/(va+vb);//相遇
            if(va!=vb)//避免除0
            {
                ans[i++]=(2.0*j-1.0)*l/(fabs(va-vb));//追及
            }
        }
        sort(ans,ans+i);
        d=ans[num]*va;
        while(d>l)//因为是往复运动
        {
            d-=l;
        }
        d=min(d,l-d);
        printf("Time=%0.3lf Dist=%0.3lf\n",ans[num],d);
    }
    return 0;
}