To solve this problem you must use the table given in the figure attached, which shows the numbers of whales alive today. In the column titled "Population" you can see these numbers.
Therefore, when you analize the table, you can conclude that the two kinds of whales that have the closest number alive are: Fin whale, with a population of 55,000 and Sei whale, with a population of 54,000.
Finding the greatest common factor ( or G C F ): G C F is the largest number that divides evenly into all the numbers. 270 : 90 = 3 360 : 90 = 4 G C F ( 270, 360 ) = 90
