Problem 6-20 Sally Guthrie is looking for an investment vehicle that will double her money in three years. a. what interest rate, to the nearest whole percentage, does she have to receive? X % b. At that rate, how long will it take the money to triple? Round the answer to 2 decimal places. Do not round your intermediate calculations. 11.76 x years c. If she can't find anything that pays more than 7%, approximately how long will it take to double her investment? Round the answer to 2 decimal places. 9.09 x years d. What kind of financial instruments do you think Sally is looking at? Investments with anticipated returns like these are probably growth-oriented stocks. Are they risky? Yes What could happen to Sally's investment? She could lose money. Feedback Check My Work Partially correct