Answer: 3.333%
Explanation: Bank 1 let's assume the funds being released out as loan is $5000.
And annual nominal interest rate is 10% to be paid semiannauly 10% / 2 = 5%
That's 5% for 6months intervals.
Bank 2
Wishes to charge same annaul nominal rate as bank 1 but with interest paid quarterly.
10% annaul nominal rate
12months / 3 = 4months ( quarterly).
Quarterly nominal interest 10% / 3
= 3.333%