Question

According to the National Oceanic and Atmospheric Administration, the blue whale is the largest animal on Earth. Blue whales weigh approximately 3×105 pounds. Narwhals, which are also a type of whale, weigh approximately 2×103 pounds. How many times heavier is the blue whale's weight than the narwhal's weight?

Answer 1

Answer: The blue whale's weight is 150 times heavier than the narwhal's weight.

Explanation:

Given: Weight of Blue whale =
`3*10^5\text{ pounds}`

Weight of Narwhal =
`2*10^3\text{ pounds}`

Number of times blue whale's weight is heavier than the narwhal's weight =
`=\frac{\text{Weight of Blue whale}}{\text{Weight of Narwhal }}`

`=(3*10^5)/(2*10^3)\\\\=1.5*10^(5-3)\ \ \ [(a^m)/(a^n)=a^(m-n)]\\\\=1.5*10^2\\\\=1.5*100=150`

Hence, the blue whale's weight is 150 times heavier than the narwhal's weight.