Responder:
Copias del libro A = 50
Copias del libro B = 70
Explicación paso a paso:
Costo por libros A = 200
Costo por libro B = 150
Sea el número de libros A = x
Número de libros B = y
Número total de libros comprados = 120
Costo total = 20,500
x + y = 120 - - - (1)
200x + 150y = 20500 - - - (2)
De 1)
x = 120 - y
Sustituya x = 120-y en (2)
200 (120 - años) + 150y = 20500
24000 - 200y + 150y = 20500
24000 - 50y = 20500
-50 años = 20500 - 24000
-50y = - 3500
y = 70
x = 120 - y
x = 120 - 70
x = 50
Answer:
As I answered your question, answer is D
Step-by-step explanation:
Answer:
98.75
Step-by-step explanation:
25 x 395 = 9875
9875 / 100 = 98.75
hope this helps
The answer is 46 people because you have to multiply 40X.15 to get 6. Then you add 40+6=46
