A scuba diver descends at a rate of 30 feet per minute. a diver dive from a ship to search for a lost ship at the depth of 2400feet below the sea level..how long will he take to reach the ship?
Choose the correct option.
A) 70 minutes  B) 72 minutes  C) 80 minutes  D) 76 minutes  E) 77 minutes

Rationale: "time taken to reach = 2400 / 30 = 80 minutes answer : c"
Answer: C