On average, the bottle-nosed dolphin comes up for air once every three minutes; the beluga whale, a close relative, comes up for air on average once every nine minutes. The number of times a bottle-nosed dolphin would come up for air in a 24 hour period is approximately what percent greater than the number of times a beluga whale would come up for air in that same period? Choose the correct choice from the following answers: A) 150% B) 200% C) 250% D) 300% E) 350%
Dolphin once in 3 min;   Beluga once in 9 min;   So, dolphin comes up 3 times frequently than beluga, which is 300% (9-3)/2*100.   Answer: 300%.
<result>D</result>
On average, the bottle-nosed dolphin comes up for air once every three minutes; the beluga whale, a close relative, comes up for air on average once every nine minutes. The number of times a bottle-nosed dolphin would come up for air in a 24 hour period is approximately what percent greater than the number of times a beluga whale would come up for air in that same period?