Commission Calculation and Logical Reasoning

Problem Statement

A newspaper hawker gets 7% Commission on all sales up to Rs. 8000 and 5% Commission on all sales exceeding Rs. 8000. What is the total sales made by him if the sales amount after deducting his Commission is Rs. 30,000? Rs. 31,747 Rs. 31,580 Rs. 31,680 Rs. 31,800 If X and Y are integers between 10 and 99, both inclusive, is (X - Y) / 9 an integer? (I) X and Y have the same two digits, but in reverse order. (II) The tens' digit of X is 2 more than the units' digit and the tens' digit of Y is 2 less than the units' digit. Statement I alone is sufficient, but statement II alone is not sufficient. Statement II alone is sufficient, but statement I alone is not sufficient. Both statements I and II together are sufficient, but neither statement alone is sufficient. Each statement alone is sufficient. In the UEFA European Championship football match, at half-time, Real Madrid was trailing by three goals. Did it win the match? I: In the second-half Real Madrid scored four goals. II: The opponent