You borrow 1000 dollars you promise to pay 1780 dollars back in 4 years what is the percentage
I = PRT
780 = 1,000 * R * 4
780 = 4,000 R
780/4,000 = R
0.195 = 19.5% = R
780 = 1,000 * R * 4
780 = 4,000 R
780/4,000 = R
0.195 = 19.5% = R