1 % of 110 = 1.1
x 6 = 6.6
round up because you can't have 0.6 of a person.
7 people a week.
250 - 110 = 140
140 divided by 7 = 20
20 weeks
Answer:
1/3
Step-by-step explanation:
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
3 (x-7) = 9
X-7 = 3
X = 10
B is the answer
Multiply 4 from both sides
Simplify
