The ratio of boys to girls in a class is . There are students altogether. How many girls are there?

Answer and explanation

Correct answer: A.

  1. Step 1: There are parts, so one part is .
  2. Step 2: Girls: .
Answer
.
Why not the others: is what you get if you give the number of boys. is what you get if you split the class equally. is what you get if you add the ratio number to one part.

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