Final answer:
An adult male blue whale is approximately 4 times heavier than an adult male African elephant. This was calculated by converting the elephant's weight from kilograms to pounds and comparing it with the humpback whale's weight converted from tons to pounds, yielding a ratio of 4.
Step-by-step explanation:
To find out how many times heavier an adult male blue whale is than an adult male African elephant, we would need the weight of an adult male blue whale. But let's start with the weight of the elephant. An adult male African elephant weighs about 9.07 x 10^3 kg. We don't have the whale's weight in the problem, but we can use the provided example for the humpback whale as a reference, which weighs about 40 tons.
First, we need to convert the elephant's weight from kilograms to pounds to compare with the weight of the whale in tons. Since 1 kilogram equals 2.20462 pounds, we multiply 9.07 x 10^3 kg by 2.20462 to get the elephant's weight in pounds:
9.07 x 10^3 kg x 2.20462 lbs/kg = 20,000 lbs (approximately)
Next, we convert the weight of the humpback whale from tons to pounds, knowing that 1 ton equals 2,000 pounds. So, 40 tons x 2,000 lbs/ton = 80,000 lbs.
Finally, we divide the weight of the blue whale by the weight of the elephant to get the ratio:
80,000 lbs / 20,000 lbs = 4
Therefore, an adult male blue whale is about 4 times heavier than an adult male African elephant, which corresponds to option B.