Bunuel wrote:

In the figure above, the number of shaded squares is what percent greater than the number of unshaded squares?

(A) 25%

(B) 40%

(C) 50%

(D) 60%

(E) 75%

Attachment:

2017-11-11_1743.png

# of shaded squares: 15

# of unshaded squares: 10

Shaded squares are what percent greater than unshaded squares?

1) Half of 10 is 5

50 percent of 10 is 5

15 - 10 = 5

15 is 50 percent greater than 10

OR

2) Percent greater than:

\(\frac{New - Old}{Old} * 100\)

\((\frac{15 -10}{10}) = (\frac{5}{10}) = (.5 * 100)\) = 50 percent

Answer C

_________________

In the depths of winter, I finally learned

that within me there lay an invincible summer.

-- Albert Camus, "Return to Tipasa"