The boys and girls in the class formed groups without the rest of the fives, two girls and three boys. Six girls are missing to create mixed pairs (1 boy and one girl). How many girls are in the classroom?

Correct answer:

d =  12

Step-by-step explanation:

d = 2n c = 3n c = d + 6  3 n=2 n+6  n=6  n=16=6  n=6  d=2 n=2 6=12

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