could anyone give me a step by step solution, thank you!

6. Details of a limit order book are as follows. BIDS ASKS QUANTITY PRICE PRICE QUANTITY 10 52 54 54 25 51 56 10 12 49 57 10 An investor submits a limit sell order for 40 shares at a price of 48. The total price paid for the shares purchased is closest to: a. $1,750. b. $1,795. c. $2,040. d. $0. 7. Details of a limit order book are as follows. BIDS ASKS QUANTITY PRICE PRICE QUANTITY 100 52 54 540 250 51 56 100 120 49 57 100 An investor submits a Fill-and-Kill buy order for 600 shares at a price of 55. The number of shares traded is closest to a. 0. b. 540. 600. d. 640. c