Find the are of a rectangle land.

Question

what is the area of a rentangular land broken in four regions A, B, C, D. If the area for region B is 200 ft larger than A, region C is 400 ft larger than B, and D is 800 ft larger than C

Answer 1

a = b + 200

c = b + 400

d = 800 + c

Can't be solved, at least not to where you get an exact number.  There are 4 variables (a, b, c, d) but only 3 equations.

You can get an answer, but it will always have a letter (a, b, c, or d) in it.

Is that the complete problem?  Is there anything else in the problem that you might not have put in this post?