A restaurant serves sandwiches and salads. They sold 14 sandwiches and 14 salads for a total of $280 for lunch. In the evening,

Question

4 years ago

15

42 sandwiches and 154 salads were sold for a total of $1400 .

1 answer:

hammer [34] · Answer 1 · 2022-01-24T18:52:55+03:00

Answer:

The cost of one sandwich is $15 and the cost of one salad is $5

Step-by-step explanation:

<u><em>The question is</em></u>

Find out the cost of one sandwich and the cost of one salad

Let

x ----> the cost of one sandwich

y ---> the cost of one salad

we know that

$14x+14y=280$ -----> equation A

$42x+154y=1,400$ -----> equation B

Solve the system by graphing

The solution is the intersection point both graphs

using a graphing tool

the solution is the point (15,5)

see the attached figure

therefore

The cost of one sandwich is $15 and the cost of one salad is $5