Answer:
Q= 166.67
Step-by-step explanation:
Q =130-120p =Q=30+20p
step1= Q-130=120p
p=Q-130/120
Then, substitute P place by (Q-130/120)
Q=30+20p
Then
Q=30+20(Q-130/120)
Q=30+(20Q/120)-(130/60)
Q=30-(130/60)+0.167Q
Q=30-(2.167)+0.167Q
Q-0.167Q=27.833
Q=27.833/0.167
Q=166.67