Maria tiene cierta cantidad de dinero .Juan tiene el doble de maria , y pepe la mitad de maria .si juntos acomulan 3,521 ,¿cuanto dineto tiene juan ?
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Juan = 2X
Pepe = 1/2X
Total = 3,521
X + 2X + 1/2X = 3,521
7/2X = 3,521
3,5X = 3,521
X = 3,521 / 3,5
X = 1,006
Juan = 2 . 1,006
Juan = 2,012