25. The correct answer is (D). You can solve this problem by setting up and solving a
system of two equations in two variables (let c and d equal the number of cats and dogs,
respectively):
c
d 5 5
6
d 5 c 1 8
Substitute c 1 8 for d in the first equation, then solve for c:
c 1 8 5 5
6c 5 5c 1 40
c 5 40
Hence, d 5 48, and the total number of boarded cats and dogs is 88.
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