On average, the bottle-nosed dolphin comes up for air once every five minutes; the beluga whale, a close relative, comes up for air on average once every eight 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 answer:
A) 50%  B) 75%  C) 100%  D) 150%  E) 200%
Dolphin once in 5 min;   Beluga once in 8 min;   So, dolphin comes up 1.6 times frequently than beluga, which is 150% (8-5)/2*100.   Answer: 150%.
<result>D</result>
On average, the bottle-nosed dolphin comes up for air once every five minutes; the beluga whale, a close relative, comes up for air on average once every eight 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?