Answer:
The answer to your question is Night = $ 67.5, meal = $17.5
Explanation:
Data
Night = n
Meal = m
2n + 4m = $205 (I)
3n + 8m = $342.5 (II)
Process
1.- Solve the system of equations by elimination
Multiply equation I by (3) and equation II by (-2)
6n + 12m = 615
-6n - 16m = -685
Sum the equations
0 - 4m = -70
m = -70 / -4
m = 17.5
2.- Find the value of n, substitute m in equation I
2n + 4(17.5) = 205
2n + 70 = 205
2n = 205 - 70
2n = 135
n = 135 / 2
n = 67.5