#include <bits/stdc++.h>
using std::cin;
using std::cout;

int n, m, p;

void work() {
    int lost;
    cin >> n >> m >> p, lost = m - m * (100 - p) / 100;
    cout << (n >= m ? (n - m) / lost + 1 : 0) << '\n';
}

int main() {
    int T;
    std::ios::sync_with_stdio(false), cin.tie(NULL);
    for (cin >> T; T; --T) work();
    return 0;
}