#include<iostream>
#include<cmath>
#include<algorithm>
#include<cstring>
#include<map>
using namespace std;

int main(){
    int test;
    cin>>test;
    while(test--){
        int n,m,p;
        cin>>n>>m>>p;
        int lun=0;
        while(n>=m){
            n-=m;
            n+=m*(100-p)/100;
            lun++;
        }
        cout<<lun<<endl;
    } 
    return 0;
}