The ratio of boys to girls in a class is 3 : 5. If there are 80 students in all, how many girls are there?
Answer and explanation
Correct answer: C. 50
- Step 1: There are 8 parts; each part is 80/8 = 10.
- Step 2: Girls = 5 x 10 = 50.
Answer
50.
Why not the others: 30, 40 and 55 do not fit.
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