1995 AMC 8 Problem 17

Question

The table below gives the percent of students in each grade at Annville and Cleona elementary schools:

	$K$	$1$	$2$	$3$	$4$	$5$	$6$
Annville	$16\%$	$15\%$	$15\%$	$14\%$	$13\%$	$16\%$	$11\%$
Cleona	$12\%$	$15\%$	$14\%$	$13\%$	$15\%$	$14\%$	$17\%$

Annville has

100

students and Cleona has

200

students. In the two schools combined, what percent of the students are in grade

6?

12\%

13\%

14\%

15\%

28\%

Find the number of grade-

6

students at each school separately

Divide the combined grade-

6

count by the

300

total students

Annville has

11\%

of

100 = 11

sixth graders, and Cleona has

17\%

of

200 = 34

sixth graders.

Combined, that is

11 + 34 = 45

out of

300

students, which is

\dfrac{45}{300} = 15\%.

Thus, the correct answer is D .

Problem 17 in other years