Answer :
Answer: reduce; 2.67%
Explanation:
The original interest rate was:
= Annual Cashflow/ Present value
= 600 / 15,000
= 4%
The new interest rate is:
= 600 / 22,500
= 2.67%
We can see that the interest rate reduced from 4% to 2.67%.
This revision, which will reduce the interest rate earned on your deposited funds, will adjust your earned interest rate to 2.67%.