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laila [671]
2 years ago
8

José, vecino de mi calle, me ofrece $3840 por mi computadora, con lo que ganaría el 28% del costo. Siete días después se la vend

í a Rogelio, compañero de grupo, en $3750, ¿Qué porcentaje del costo gané al hacer la venta?cual el procedimiento que operaciones se realizaron
Mathematics
1 answer:
Ierofanga [76]2 years ago
8 0
The first thing we must do for this case is to determine the cost.
 For this, we make the following rule of three:
 3840 -------------> 128%
 x ------------------> 100%
 Clearing x we have:
 x = (100/128) * (3840)
 x = 3000
 We now look for the percentage earned when making the sale.
 For this we make the following rule of three:
 3000 -------------> 100%
 3750 ------------------> x
 Clearing x we have:
 x = (3750/3000) * (100)
 x = 125
 Then, the percentage earned is:
 125-100 = 25%
 Answer:
 I won 25% of the cost when making the sale.
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<h3> The complete exercise is attached.</h3>

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