Quantity of Brushes Cost

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

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

figure the cost per brush:

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

I HATE MATH

To determine the best value among the given options, we need to compare the price per brush for each quantity. To do this, we divide the total cost by the quantity.

For option A (20 brushes):
Cost per brush = $11.80 / 20 = $0.59/brush

For option B (35 brushes):
Cost per brush = $17.15 / 35 ≈ $0.49/brush

For option C (50 brushes):
Cost per brush = $27.50 / 50 = $0.55/brush

For option D (80 brushes):
Cost per brush = $36.00 / 80 = $0.45/brush

Comparing the cost per brush, we can see that option D (80 brushes) has the lowest cost per brush at $0.45. Therefore, option D is the best value among the given options.