Answer:
A)  QE = 400, PE = 250
 QW = 325, PW = 375
b) east market has more elastic market demand 
Step-by-step explanation:
Given data :
Marginal cost = $50 ( both markets )
demand and marginal revenue in each market are given differently 
a) Determine/find the profit-maximizing price and quantity in each market 
For east market : 
50 = 450 - QE
hence QE = 450 -50 = 400
since QE = 400 ( quantity for east market )
400 = 900 - 2PE 
PE = 250 ( PROFIT maximizing price for east market ) 
For west market 
50 = 700 - 2QW 
Hence QW = 325
since QW = 325 
325 = 700 - pw 
PW = 375 
B) The market in which demand is more elastic is the east market because the quantity demanded is higher and also the profit maximizing price is lower as well