SOLUTION: In a school choir, the ratio of boys to girls is 3 : 5. If there are a total of 24 singers in the choir, how many girls are in the choir? (A) 6 (B) 9 (C) 14 (D) 15 (E) 40

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: In a school choir, the ratio of boys to girls is 3 : 5. If there are a total of 24 singers in the choir, how many girls are in the choir? (A) 6 (B) 9 (C) 14 (D) 15 (E) 40      Log On


   



Question 329384: In a school choir, the ratio of boys to girls is 3 : 5. If there are a total of 24 singers in the choir, how many girls are in the choir?
(A) 6 (B) 9 (C) 14 (D) 15 (E) 40

Answer by Tutorteddy.Com(12) About Me  (Show Source):
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Let the number of girls in the choir be 'g'.
Then, the number of boys is 24 - g.
Given, (24 - g):g = 3:5
=> 5 X (24 - g) = 3 X g
=> 120 - 5g = 3g
=> -5g - 3g = -120
=> -8g = -120
=> g = -120/-8 = 15
Hence, the number of girls is 15.