Respuesta :
Let, the number of Coffee mug = x
& number of key chain = y
Then, x + y = 21
& 8.50x + 2.75y = 132.50
Multiply first equation by 2.75,
2.75x + 2.75y = 57.75
Now, subtract this one from second equation,
5.75x = 74.75
x = 74.75 / 5.75
x = 13
In short, Your Answer would be 13
Hope this helps!
& number of key chain = y
Then, x + y = 21
& 8.50x + 2.75y = 132.50
Multiply first equation by 2.75,
2.75x + 2.75y = 57.75
Now, subtract this one from second equation,
5.75x = 74.75
x = 74.75 / 5.75
x = 13
In short, Your Answer would be 13
Hope this helps!
The number of coffee mugs the manager bought is 13.
The linear equations that can be used to represent the information in the question
c + k = 21 equation 1
8.50c + 2.75k = 132.50 equation 2
Where:
c = number of coffee mugs
k = number of key chains
What is the number of coffee mugs bought?
In order to determine the required value, multiply equation 1 by 2.75
2.75c + 2.75k = 57.75 equation 3
Subtract equation 2 from equation 3
74.75 = 5.75c
Divide both sides by 5.75
c = 13
To learn more about simultaneous equations, please check: https://brainly.com/question/25875552
