On average, the bottle-nosed dolphin comes up for air once every four minutes; the beluga whale, a close relative, comes up for air on average once every six 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? Select:
A) 50% B) 100% C) 150% D) 200% E) 250%
Dolphin once in 4 min;   Beluga once in 6 min;   So, dolphin comes up 1.5 times frequently than beluga, which is 100% (6-4)/2*100.   Answer: 100%.
<result>B</result>
On average, the bottle-nosed dolphin comes up for air once every four minutes; the beluga whale, a close relative, comes up for air on average once every six 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?