An amount of money is invested at 9,6% p.a compounded monthly. After fifteen months the interest rate drops to 8% p.a co

[answerhappygod]

An amount of money is invested at 9,6% p.a compounded monthly.
After fifteen months the interest rate drops to 8% p.a compounded
quarterly for a further 9 months. The equivalent rate of interest
compounded continuously over the entire two year period is equal to
?



(expressed as a percentage to three decimal
places).