Two competing coffee shops, Shop A and Shop B, are located next to each other. Each morning, they must simultaneously decide whether to charge a high price (£3.50) or low price (£2.50) for coffee. The number of customers they get depends on both shops' choices: If both charge high: Each shop gets 40 customers If both charge low: Each shop gets 50 customers If one charges high and one charges low: The low shop gets 80 customers, the high shop gets 20 customers This situation repeats for 5 days. Shop A decides to always charge low. Shop B knows Shop A's strategy. What is Shop B's total revenue over the 5 days if it plays optimally?