#include <iostream>
#include <math.h>
using namespace std;
 
int main() {
	// your code goes here
	int i,j,n;
	double w1,w2,a,b,l;
	double dochod,podat,cena,cal,aa,bb,cc,del,x1,x2;
	cin>>n;
	while(n--)
	{
		cin>>w1>>w2>>a>>b;
		cena=w1*w2;
		podat=cena*a/100;
		cout<<podat<<endl;
		dochod=cena-podat;
		cout<<dochod<<endl;
		cal=(dochod*100)/(100-b);
		cc=cena-cal;
		bb=(w1+w2);
		aa=1;
 
		del=bb*bb-4*aa*cc;
		//cout<<aa<<" "<<bb<<" "<<cc<<" "<<sqrt(del)<<endl;
		//cout<<"DEL="<<del<<endl;
		x1=(-bb+sqrt(del))/(2*aa);
		printf("%.4f \n",x1);
	}
	return 0;
}

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