Answer; 27
Explanation:
x = first consecutive number
x + 2 = second consecutive number
x + 4 = third consecutive number
x + x + 4 = 5(x + 2) - 81
2x + 4 = 5x + 10 - 81
2x + 4 = 5x - 71
3x = 75
x = 25
First number = x = 25
Second number = x + 2 = 27
Third number = x + 4 = 29