Answer:
a) effective rate 14.75%
Step-by-step explanation:
We should determinate the rate using the following formula:
principal x rate x time = interest
The principal will be the net of discount 1 - 0.01 = 0.99
Then, time will be the exposure to interest: 45 days net - 20 days end of discount = 25 days over 365
interest 1% = 0.01
0.99 x rate x (45-20)/365 = 0.01
rate = 0.01/0.99*365/25 = 0.1474 = 14.75%