A) Katri had forgotten 5 years ago that the capitals in her two different savings accounts would accrue interest. The interest rate for savings accounts was 4.44% (p.a.) in the first year, and along with the general interest rate trend, it dropped by 0.1 percentage point every year. A year ago, Katri withdrew the entire capital of the first account, and then the capital of this account was 6140. A year after this, she also withdrew the entire capital of the second account, and the capital of this account was 2820. What was the sum of the capital at the beginning?

 

B) Tiina takes a quick loan of 208 euros from a company, for which 20.4 euros of expenses are first paid after 40 days, and the original loan amount is repaid after 80 days. What is the real annual interest rate for Pikavip? Assume there are 365 days in a year. Answer in percentage units (without percent sign)