Question: 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?\nOptions:\n(A) 25%\n(B) 50%\n(C) 75%\n(D) 100%\n(E) 150% Let's think first. Some random reasoning:
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Dolphin once in 3 min;\nBeluga once in 6 min;\nSo, dolphin comes up 2 times frequently than beluga, which is 150% (6-3)/2*100. The final answer: (E).
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