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 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?
Choose the correct choice.
A) 25%  B) 50%  C) 75%  D) 100%  E) 150%
Dolphin once in 3 min;   Beluga once in 6 min;   So, dolphin comes up 2 times frequently than beluga, which is 150% (6-3)/2*100.   Answer: 150%.
<result>E</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 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?