un capataz contrata a un obrero ofreciendole 70 sucres por cada dia que trabaje y 40 por cada dia que sin culpa suya no pueda trabajar .al cabo de 35 dias el obrero ha recibido 2000 sucres .cuantos dias trabajo y cuantos dias no? como se resuelve?

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02-02-2018
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un capataz contrata a un obrero ofreciendole 70 sucres por cada dia que trabaje y 40 por cada dia que sin culpa suya no pueda trabajar .al cabo de 35 dias el obrero ha recibido 2000 sucres .cuantos dias trabajo y cuantos dias no? como se resuelve?

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Jr04 Jr04 · Answer 1 · 2018-02-20T04:01:47+01:00

Un capataz contrata a un obrero ofreciendole 70 sucres por cada dia que trabaje y 40 por cada dia que sin culpa suya no pueda trabajar .al cabo de 35 dias el obrero ha recibido 2000 sucres .cuantos dias trabajo y cuantos dias no? como se resuelve?

Día que trabaje = x Día que NO trabaje = y

70x+40y= 2000
x + y = 35

entonces --> x= 35- y

70(35- y) +40 y = 2000
2450- 70y + 40y = 2000
- 30 y = 2000 - 2450
- 30 y = - 450
y = - 450 : - 30
y = 15

No trabajó 15 días
Trabajó 20 días