Mr. John Halley has $3,600 to invest in the market. He is considering the purchase of 60 shares of Comet Airlines at $60 per share. His broker suggests that he may wish to consider purchasing warrants instead. The warrants are selling for $20, and each warrant allows him to purchase one share of Comet Airlines common stock at $42 per share. a. How many warrants can Mr. Hailey purchase for the same $3,600? (Do not round intermediate calculations and round your answer to the nearest whole number.) Number of warrants purchased warrants b. If the price of the stock goes to $70, what would be his total dollar and percentage return on the stock? (Do not round intermediate calculations. Round the first answer to the nearest whole dollar. Input the second answer as a percent rounded to 2 decimal places.) Total dollar return on the stock Percentage return on the stock %