Respuesta :

Answer:

84

Step-by-step explanation:

The 4 part of the ratio relates to 48 girls, then

48 ÷ 4 = 12 ← value of 1 part of the ratio , then

3 parts = 3 × 12 = 36 ← number of boys

total number of students = 48 + 36 = 84

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