His expenses towards bike travel have been continuously increasing through the years 1998-2002. The increase has been same for all previous years. Then in which year was there maximum increase in total travel expense?
c. 2000
Rocky’s expenses on his bike in 1998, 1999, 2000, 2001 and 2002 was 
times of his total expenses. Since the increase in expenses on bike increased continuously and by constant amount, the increase was most shadowed when other expenses were higher and the total expense increased the most. This happened when bike cost dropped to 
total cost despite continuous increase in actual bike expense from 
, in 2000
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