The check-cashing store also makes one-month add-on interest loans at 7.8 percent discount interest per week. Thus if you borrow $200 for one month (four weeks), the interest will be ($200 × 1.0784) – $200 = $70.09. Because this is discount interest, your net loan proceeds today will be $129.91. You must then repay the store $200 at the end of the month. To help you out, though, the store lets you pay off this $200 in installments of $50 per week. What is the APR of this loan? What is the EAR?