#include<bits/stdc++.h>
#define LL long long
using namespace std;bool h1;
int T,t,m,n,k;
bool h2;int main(){
    cin>>T;
    while(T--){
        t=0;
        scanf("%d%d%d",&n,&m,&k);
        while(n>=m){
            t++,n=n-m+m*(100-k)/100;
        }
        printf("%d\n",t);
    }
    return 0;
}