The table is:
White (x) Pink(y)
12 18
36 A
B 72
C 126
The unit rate is 3/2, so for every y (Pink flowers) and x (White flowers), we get:

Now, we can use this equation to calculate A. Where y is A and x is 36 white flowers, so, solving for A, we get

At the same way, we can formulate equations to calculate B and C as:


Answers: A = 54
B = 48
C = 84