Question

The length of a blue whale is approximately 3 × 10^4 millimeters; the length of an otter is 2 × 10^3 millimeters. How many times longer is the blue whale than the otter?

1.5
2
10
15

Answer 1

The blue whale is 3 x 10^4 / 2 x 10^3 = 15 times longer than the otter.