The average weight of a blue whale is 4 x 105 pounds. The average weight of an elephant is 1 x 104 pounds. Approximately how many times heavier is a blue whale than an elephant in pounds?

(1 po
4 times heavier.
2 times heavier.
40 times heavier.

The average weight of a blue whale is 4 x 10^5 pounds, and the average weight of an elephant is 1 x 10^4 pounds. To find out how many times heavier a blue whale is than an elephant, we can divide the weight of the blue whale by the weight of the elephant.

4 x 10^5 / 1 x 10^4 = 40

Therefore, a blue whale is approximately 40 times heavier than an elephant in pounds. So the correct answer is 40 times heavier.