plx anserr using formula not excel

Question4 a) Consider the following cash flow diagram. What is the value of X if the rate o 5%? return is 0 $400 (3 marks) Consider the following "present worth versus interest rate" graph for a well behaved investment. the interest rate at B is 20%, then which of the following best describes the analysis of the estment ii, iii. iv. none of the above are tr the IRR of the investment is less than 20% the IRR of the investment is equal to 20% the IRR of the investment is greater than 20% 0 Interest Rate ma