Question 1
If at the cinema three box offices are open, the visitors have to wait 15 min to buy a ticket. By how many minutes is the waiting time reduced if two more box offices are opened?
(A) 3
(B) 5
(C) 6
(D) 7
(E) 10
(A) 3
(B) 5
(C) 6
(D) 7
(E) 10