#include<bits/stdc++.h>
using namespace std;
int T,n,m,p,c,a;

int read(){
    int x=0;char ch=getchar();
    while(!isdigit(ch)) ch=getchar();
    while(isdigit(ch)) x=(x<<3)+(x<<1)+(ch^48),ch=getchar();
    return x;
}

void print(int x){
    if(x>=10) print(x/10);
    putchar(x%10+'0');
}

int main(){
    T=read();
    while(T--){
        n=read(),m=read(),p=read();
        c=m-m*(100-p)/100;
        a=n-m;
        if(a>=0) print(a/c+1),puts("");
        else puts("0");
    }

    return 0;
}