I want to know how to do question 18, but question 18 is reffers to question 17. Thanks!

Emily's trust fund has a value of 100,000 on January 1, 1997. On April 1, 1997, 10,000 is withdrawn from the fund, and immediately after this withdrawal the fund has a value of 95,000. On January 1, 1998, the fund's value is 115,000. Find the time-weighted rate of investment return for this fund during 1997. Find the dollar-weighted annual rate of investment return for Emily's fund, assuming simple interest. Find the rate of return for Emily's fund using simple interest, and assuming a uniform distribution throughout the year of all deposits and withdrawals. Assume in Question 17 that, in addition to the information given, there is also a 5000 deposit to the fund on July 1, 1997. Find the dollar-weighted annual rate of investment return for the fund, assuming simple interest. Find the rate of return for Emily's fund using simple interest and assuming a uniform distribution throughout the year of all deposits and withdrawals. Is it possible to calculate the time-weighted rate of return? If not, why not