<image>Given that points \( A \) and \( B \) are on the number line in the figure, where point \( A \) corresponds to the number \(-10\) and point \( B \) corresponds to the number \(90\). An electronic ant \( P \) starts from point \( B \) and moves to the left at a speed of \(3\) units per second, while another electronic ant \( Q \) starts from point \( A \) and moves to the right at a speed of \(2\) units per second; 

(1) Please write down the number corresponding to the midpoint \( M \) of segment \( AB \).

(2) If the two electronic ants meet at point \( C \) on the number line, find the number corresponding to point \( C \).

(3) How long will it take for the two electronic ants to be \(35\) units apart on the number line?