#include <iostream>
#include <algorithm>
#include <string.h>
using namespace std;

int t;
float n_, m_, p_;

int main()
{
    scanf("%d", &t);
    while (t--)
    {
        scanf("%f%f%f", &n_, &m_, &p_);
        float k_ = (m_ - ((m_ * p_) / 100));
        int n = n_, m = m_, k = k_;
        k = m - k; //每次扣的钱
        int res = (n - m) / k + 1;
        if (n < m)
            res = 0;
        printf("%d\n", res);
    }
    return 0;
}