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3 years ago

Un ingeniero civil a cargo de una obra contrata una cierta cantidad de obreros. Estima que, si le

1 answer:

8 0

Al plantear un sistema de ecuaciones lineales, encontramos que el número de obreros que contrató el ingeniero civil fue 50.

Para encontrar el número de obreros que el ingeniero contrató debemos plantear un sistema de ecuaciones lineales de dos ecuaciones con dos incógnitas, tal como sigue:

$M - 1400*x = -8000$ (1)

$M - 1200*x = 2000$ (2)

En donde:

M: es la incógnita igual al monto de dinero del ingeniero

x: es la incógnita igual al número de obreros

De la ecuación (1) tenemos:

$M = 1400*x - 8000$ (3)

Podemos encontrar el valor de x (número de obreros), introduciendo la ecuación (3) en la ec (2):

$1400*x - 8000 - 1200*x = 2000$

$200*x = 10000$

$x = 50$

El monto de dinero inicial del ingeniero sería entonces (ec 3):

$M = 1400*50 - 8000 = 62000$

Por lo tanto, el número de obreros que contrató el ingeniero es 50.

Puedes aprender sobre otro método de resolución de sistemas de ecuaciones lineales ingresando acá: brainly.com/question/10831551?referrer=searchResults

Espero que te sea de utilidad!

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