#include<bits/stdc++.h>
using namespace std;
typedef long long ll;

int read(){
    int res=0,op=1;char ch=getchar();
    while(!isdigit(ch)){if(ch=='-')op=-1;ch=getchar();}
    while(isdigit(ch))res=res*10+ch-'0',ch=getchar();
    return res*op;
}
void write(ll x){
    if(x<0)putchar('-'),x=-x;
    if(x>9)write(x/10);
    putchar(x%10+48);
}
void solve(){
    int n=read(),m=read();
    double p=read();
    int x=ceil(m*p*0.01);
    if(n<m)puts("0");
    else printf("%d\n",(n-m)/x+1);
}
int main()
{
    int es=read();
    while(es--)
    solve();
    return 0;
}