Answer:
we must first determine the annual payment:
annual payment = present value / annuity factor
present value = $25,000
PV annuity factor, 10%, 3 periods = 2.4869
annual payment = $25,000 / 2.48685 = $10,052.87
year    payment   interest paid    principal paid    ending balance
1 Â Â Â Â Â $10,052.87 Â Â Â $2,500 Â Â Â Â Â Â Â $7,552.87 Â Â Â Â Â Â $17,447.13
2 Â Â Â Â $10,052.87 Â Â Â $1,744.71 Â Â Â Â Â $8,308.16 Â Â Â Â Â Â Â $9,138.97
3 Â Â Â Â $10,052.87 Â Â Â $913.90 Â Â Â Â Â Â $9,138.97 Â Â Â Â Â Â Â $0
in percentages:
year    payment   interest paid    principal paid  Â
1 Â Â Â Â Â Â Â 100% Â Â Â Â Â Â 25% Â Â Â Â Â Â Â Â Â Â Â Â 75%
2 Â Â Â Â Â Â Â 100% Â Â Â Â 17.36% Â Â Â Â Â Â Â Â Â 82.64%
3 Â Â Â Â Â Â Â 100% Â Â Â Â 9.09% Â Â Â Â Â Â Â Â Â 90.91%