Answered

Welcome to Westonci.ca, where your questions are met with accurate answers from a community of experts and enthusiasts. Discover solutions to your questions from experienced professionals across multiple fields on our comprehensive Q&A platform. Connect with a community of professionals ready to help you find accurate solutions to your questions quickly and efficiently.

18 people order soup and sandwiches for lunch. Sandwiches cost 7.75 each and 4.50 the soup. Total cost of 18 luchees was 113.50 how many sandwiches were ordered

Sagot :

Let soups be represented by x and sandwiches by y.

x + y = 18
4.5x + 7.75y = 113.50

x = 18 - y

4.5(18 -y) + 7.75 y = 113.5

= 81 - 4.5y + 7.75y = 113.5

81 + 3.25y = 113.5

3.25y = 32.5

y = 10.

x + y = 18
x + 10 = 18

Thus, x = 8. 

Thus, 8 soups and 10 sandwiches were ordered.
Let the soup be x  and sandwich  be  y
7.75x+4.50y=113.50
x=18-y
7.75(18-y)+4.50y=113.50
y=10
x+y=18
so x=8