Quantity of Brushes Cost

Question

20 $11.80
35 $17.15
50 $27.50
70 $45.50
80 $36.00

The table shows the price for different quantities of sponge brushes offered at a wholesale art supply store. Which is the BEST VALUE?
A) 20 brushes
B) 35 brushes
C) 50 brushes
D) 80 brushes

Answer 1

figure the cost per brush:
11.80/20 = 0.59
Now convert the others, and pick the lowest cost per brush.

Answer 2

I HATE MATH

Answer 3

80 brushes (I have the same question on USA TESTPREP)