Question 726461
The two consecutive pages be x & x+1

product x(x+1)

sum = x+x+1= 2x+1


2x+1 = x(x+1)-11

2x+1=x^2+x-11

x^2-x-12=0

x^2-4x+3x-12=0

x(x-4)+3(x-4)=0

(x-3)(x-4)=0

x=3 OR 4

4*5 = 20

4+5=9