Can someone help me with this problem? Attached is an example to help

6.1#4

An annuity-immediate has level annual payments for n years. The average time of the payments using the method of equated time is 11 years. Determine the duration of the payments if the effective rate of interest is 10%. [9.c-h #09] Question 4 1 pts An annuity-immediate has level annual payments for n years. The average time of the payments using the method of equated time is 11 years. Determine the duration of the payments if the effective rate of interest is 10%. [9.c-h #09] 4. An annuity-immediate has level annual payments for n years. The average time of the payments using the method of equated time is 8 years. Determine the duration of the payments if the effective rate of interest is 4.5%. [9.c-h #09] i-4.5% (A)] 7.18 B) 6.61 C) 6.9 D 7.47 E) 7.76 07.41 8 = 1*2*3*2* * - * [ n(at)] n = 15 0 7.1 o 6.79 MacD = + 2v? 3v? + ... +15 10 = (Ialis. - 7.18431 V + V2 + 3 + ... + v15 ais o 7.72 08.03