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3 years ago

7

Del dinero que tenía gasté 1/3 en comida y 1/8 en pasaje, quedándome aún 39 pesos. ¿Cuánto tenía al principio?

1 answer:

ruslelena [56]3 years ago

6 0

Answer: 72 pesos.

Step-by-step explanation:

Supongamos que al principio tenias X, donde X representa la cantidad de dinero que tenias en un principio.

Gastaste:

X/3 en comida

X/8 en pasaje.

Entonces el gasto total es:

X/3 + X/8 = X*(1/3 + 1/8) = X*(11/24)

Entonces el dinero que te queda es:

X - X*(11/24) = X*(13/24) = 39 pesos.

X = (24/13)*39 pesos = 72 pesos

Al principio tenias 72 pesos.

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