Question

27. The West Middle School Math Club has 15 sixth-grade members, 12 seventh-grade

members, and 13 eighth-grade members. What percent of the math club members are
either sixth- or seventh graders?
A. 30%
B. 32.5%
C. 67.5%
D. 72%

Answer 1

There are 15 + 12 = <<15+12=27>>27 sixth and seventh-grade members.

The total number of members is 15 + 12 + 13 = <<15+12+13=40>>40.

The fraction of members that are either sixth- or seventh-grade members is 27/40.

To convert this to a percentage, we multiply by 100: 27/40 × 100% = 67.5%

Therefore, the answer is (C) 67.5%.