There are 32 fish in a tank. 12 are blue and the rest are green. What is the ratio of blue to green fish in its simplest form?

3:5

Step-by-step explanation:

Total number of fish = 32

Given that 12 are blue and the rest green

Number of green will be 32 - 12 = 20

Ratio of blue to green fish = number of blue fish : number of green fish

= 12:20

Therefore, to put 12:20 in the simplest form, we divide by a common factor of 4

= 12/4 : 20/4

= 3:5

correct answer:

b.(19,-2)