Make two equations. Then solve. Let t and b represent the numbers of pages in the Tax Code and Bible, respectively.
t - b = 18,528 . . . . . tax code exceeds Bible by 18,528 pages
t + b = 21,472 . . . . .together, they total 21,472 pages
Add the two equations.
2t = 40,000
t = 20,000
The number of pages in the tax code is 20,000.
Trapezoid : A= (a+b/2)h
a and b are the bases of the trapezoid
h is the height
kite: A= pq/2
p is the diagonal
q is the other diagonal
