El saco tiene un precio original de 400 soles.
<h3>¿Cómo determinar el precio inicial de un saco comprado con descuento?</h3>
En este problema tenemos el caso de un precio de compra (P'), en soles, que es resultado de aplicar dos descuentos consecutivos al precio original del saco (P), en soles. El precio es el resultado de multiplicar el precio original por los dos factores de porcentaje, descrito por la siguiente fórmula:
P' = P · (1 - r₁ / 100) · (1 - r₂ / 100), 0 ≤ r₁, r₂ ≤ 100.
Donde:
- r₁ - Porcentaje del primer descuento.
- r₂ - Porcentaje del segundo descuento.
Si sabemos que P' = 224, r₁ = 30 y r₂ = 20, entonces el precio original del saco es:
224 = (1 - 30 / 100) · (1 - 20 / 100) · P
224 = 0.7 · 0.8 · P
P = 224 /(0.7 · 0.8)
P = 400
El precio original del saco es de 400 soles.
Para aprender más sobre descuentos: brainly.com/question/24130820
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Answer:
Step-by-step explanation:
To add the polynomials
Remove parentheses:
Group like terms:
Add similar elements:
The Standard Form for writing down a polynomial is to put the terms with the highest degree first,its term of 2nd highest is 2nd etc..
In our case the standard form is
Answer:
Step-by-step explanation:
You could talk about how how or low it goes.
For instance: if the graph was going very high then suddenly low you could say that it was going very high until it suddenly dropped.
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set up a table (multiply across and add down - <em>don't add the middle column). Use the equation created by the "Total" row to solve for the variable.</em>
Quantity (times) % equals Total
Sol'n 1: x * .80 = (x)(.8)
<u>Sol'n 2: 15 - x * .30 = (15 - x)(.3)</u>
Total: 15 * .50 = .8x + .3(15 - x)
15(.5) = .8x + 4.5 - .3x
7.5 = .5x + 4.5
3.0 = .5x
6 = x
Answer: 6 liters of 80% and 9 liters of 30%
