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

int t, n, m, p;
int main() {
    cin >> t;
    while(t--) {
        cin >> n >> m >> p;
        int c = m - (int)(m * (100 - p) / 100.0);
        if(n < m) cout << 0 << endl;
        else cout << (n - m) / c + 1 << endl;
    }
}