You are in desperate need of cash, and you go see Nicky Eyes…

Yоu аre in desperаte need оf cаsh, and yоu go see Nicky Eyes ("What's up, guy?") to borrow $1000. He demands that you pay him back $1250 in exactly one week, or bad things will happen. What is the EAR/EFF of this loan? There are 52 weeks in a year. (Hint: calculate the APR of this loan, then use the EFFECT function.)