2008 AMC12 A #7

While Steve and LeRoy are fishing \(1\) mile from shore, their boat springs a leak, and water comes in at a constant rate of \(10\) gallons per minute. The boat will sink if ti takes in more thatn \(30\) gallons of water, Steve starts rowing toward the shore at a constant rate \(4\) miles per hour while LeRoy bails water out of the boat. What is the slowest rate, in gallons per minute, at which LeRoy can bail if they are to reach the shore without sinking?

(A) \(2\)          (B) \(4\)          (C) \(6\)          (D) \(8\)          (E) \(10\)

정답 (D)