#include <cstdio>
#include <cstring>

int T;
int main(){
    scanf("%d" ,&T);
    while(T--){
        int n ,m ,p;
        scanf("%d%d%d" ,&n ,&m ,&p);
        int cnt = 0;
        while(n >= m){
            n = n - m + m * (100 - p) / 100;
            ++cnt;
        }
        printf("%d\n" ,cnt);
    }return 0;
}