Respuesta: x:chicas y:chicos
x+y=27
2y=x (las chicas son el doble)
sustituimos: 2y+y=27 ⇒ y=27/3=9
Hay 9 chicos y 18 chicas
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Respuesta: x:chicas y:chicos
x+y=27
2y=x (las chicas son el doble)
sustituimos: 2y+y=27 ⇒ y=27/3=9
Hay 9 chicos y 18 chicas