Answer:
Tienes 3 números, "x", "y", "z"
=> El primero es 20 unidades menor que el segundo:
El primero es "x", y el segundo es "y", entonces:
x = y - 20
=> El tercero es igual a la suma de los dos primeros:
El tercero es "z", entonces:
z = x + y
z = (y - 20) + y
z = 2y - 20
=> Entre los tres suman 120
x + y + z = 120
y - 20 + y + 2y - 20 = 120
4y - 40 = 120
4y = 160
y = 40
Si y = 40, entonces:
x = y - 20
x = 20
Además, z = 2y - 20
z= 60
RPTA:
x=20
y=40
z=60
Step-by-step explanation:
The answer is b, c, and d
Answer:
New Cost of item is 
Step-by-step explanation:
Given:
Original Cost of item = 
Item was marked down by 
To Calculate Cost after marked down we need to multiply original cost by 50 and then divide by hundred.
Cost after marked down = 
Now New cost of the item is calculated by Subtracting Cost after marked down by Original Cost of item.
New cost of the item = 
The answer would be SSS or Side-Side-Side.
Answer:
x=15
Step-by-step explanation:
x/3=10-5
x/3=5
x=5*3
x=15
