Answer:
7 guest will not be served.
Step-by-step explanation:
x = 16.6666666667
24x4 - 18x3 + 4x2 - 3x =0
24x4 = 96
18 x 3 = 54
4x2 = 8
96-54+8= 50
50/3 = 16.6666666667
4/6
1/2 = 3/6. 3/6 + 1/6 = 4/6
sociology=169
psychology=87