#include <cstdio>
#include <algorithm>
using namespace std;

int main() {
  int nt, n, m, p;
  scanf("%d", &nt);
  while (nt--) {
    scanf("%d%d%d", &n, &m, &p);
    int x = (p*m+99)/100;
    int ans = max(0, (n-m+x)/x);
    printf("%d\n", ans);
  }

  return 0;
}