In a class the ratio of boys to girls is 2 : 3. If there are 45 students in total, how many girls are there?
Answer and explanation
Correct answer: D. 27 girls
- Step 1: The ratio has 2 + 3 = 5 parts, so one part is 45 / 5 = 9 students.
- Step 2: Girls are 3 parts: 3 x 9 = 27.
Answer
27.
Why not the others: 18 is the number of boys, and the other two values do not match a 2 : 3 split of 45.
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