#include<stdio.h>
#include<string.h>
#include<algorithm>
using namespace std;

int test,n,m,p,loss;


int main(){
    scanf("%d",&test);
    
    while(test--)
    {
        int ans=0;
        scanf("%d%d%d",&n,&m,&p);
        if(n>=m){
            loss=(m*p+99)/100;
            ans=(n-m+loss)/loss;
        }
        
        printf("%d\n",ans);
    }
    
    return 0;
}