Statement 1: This only tells us the distance between cities Q and R but provides no information about the distance from P to Q.

Statement 2: This tells us the distance between cities P and R but, again, provides no information about the distance from P to Q.

Using Both Statements Together: Even when combined, these statements only tell us the distances from each city (P and Q) to city R separately. We still lack information on whether P, Q, and R form a straight line or if they are arranged in some other configuration (e.g., a triangle), so the distance between P and Q remains undetermined.