Suppose that a trader has bought some illiquid shares. In particular, the trader has 100 shares of A, which is bid $50 and offer $60, and 200 shares of B, which is bid $25 and offer $35. What are the proportional bid-offer spreads? What is the impact of the high bid-offer spreads on the amount it would cost the trader to unwind the portfolio (cost of liquidation)? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16. Include commas in your final answer. For example, Write 1000 as 1,000)

(a)The proportional bid-offer spreads for shares of A is ______________and for B is ____________.

The cost, associated with bid-offer spreads, when the portfolio is unwound is $ __________.