#include <iostream>
using namespace std;
int main() {
int T;
cin >> T;
while (T--) {
int X, Y;
cin >> X >> Y;
int new_selling_price = X + (X * 0.1);
int buying_price = X - Y;
int new_profit = new_selling_price - buying_price;
cout << new_selling_price << endl;
}
return 0;
}
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