Answer:
6.00%
Step-by-step explanation:
Rate of return can be calculated using RATE function in excel or I/Y on calculator or using the formula for annuity
Annuity Rate = RATE(nper=8, pmt=1100, pv=-6,830.77, fv = 0, 0)
Annuity Rate = 0.06000118
Annuity Rate = 6.00%