Participants 81331

Two hundred fifty-two participants signed up for the classical ballroom dance course. There were 2 times more girls than boys. How many girls and how many boys applied?

Correct answer:

a =  168
b =  84

Step-by-step explanation:

a+b=252 a=2b  a+b=252 a=2 b  a+b=252 a2b=0  Row2Row1Row2 a+b=252 3b=252  b=3252=84 a=252b=25284=168  a=168 b=84

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