SOLUTION: Mrs. Smith’s fifth period Algebra II class contains 12 boys and 15 girls. If 3 / 4 of the boys and 2/ 3 of the girls are present today, how many student in the class are absent?

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: Mrs. Smith’s fifth period Algebra II class contains 12 boys and 15 girls. If 3 / 4 of the boys and 2/ 3 of the girls are present today, how many student in the class are absent?       Log On


   

Question 254426: Mrs. Smith’s fifth period Algebra II class contains 12 boys and 15 girls. If 3 / 4 of the boys and 2/ 3 of the girls are present today, how many student in the class are absent?
(A) 19 (B) 6 (C) 9 (D) 10 (E) 8

Answer by Theo(13342) About Me  (Show Source):
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there are 12 boys.

3/4 * 12 are present which means that 1/4 * 12 are absent.

3 boys are absent.

there are 15 girls.

2/3 * 15 are present which means that 1/3 * 15 are absent.

5 girls are absent.

total student absent is 3 + 5 = 8.

that would be selection E.