Problem: The area of a trapezoidal field is square yards. Its altitude is yards. Find the two bases, if the number of yards in each base is an integer divisible by . The number of solutions to this problem is:
Answer Choices:
A. none
B. one
C. two
D. three
E. more than three
Solution:
. This indeterminate equation is satisfied by the following pairs of integral values: . (D) is the correct choice.