Question 1007257
Let John's score be x
Let Ann's score be y

y = x - 25

x + y = 425
x + (x-25) =425
2x -25 = 425
2x = 450
x = 225

y = x - 25 = 225 - 25 = 200

Final Answer:
John's score = 225
Ann's score = 200