The number of white rabbits that are at the farm is 60
From the question, we are to determine the number of white rabbits that are at the farm
From the given information,
There are 210 rabbits at the farm
and
For every 5 gray rabbits, there are 2 white rabbits
Then, we can write that
5x + 2x = 210
Where x is the number of groups of 5 gray rabbits and 2 white rabbits
Then,
7x = 210
x = 210/7
x = 30
The number of white rabbits is 2x
∴ Number of white rabbits = 2×30
Number of white rabbits = 60
Hence, the number of white rabbits that are at the farm is 60
Learn more on Calculating quantity here: https://brainly.com/question/14394953
#SPJ1