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X = Salario de Victor al día
X + 8 = Salario de Angel al día.
Sea n = Numero de días
nX = 1240 (1)
n(X + 8) = 1400
nX + n8 = 1400 (2)
(1): n = 1240
-(2): -nX - n8 = - 1400
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-n8 = (1240 - 1400)
-n8 = -160
n = -160/-8
n = 20
Trabajan 20 días
Ahora diaramente:
Victor => 20X = 1240
X = 1240/20
X = 62
Victor gana al día 62 euros
Angel gana al día 62 + 8 = 70 euros
Rta: Victor gana al día: 62 euros, Angel gana al día: 70 euros