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300 personas
1/5= Sentadas
4/5= De pie
Viajan sentadas:
1/5 de 300
300×1/5= 300/5= 60
R. 60 personas sentadas
Otra manera:
x = Sentadas
4x= De pie
x + 4 x = 300
5x= 300
x= 300/5
x= 60
R. 60 personas sentadas