Harper's Apple Farm began expansion of it's apple harvest in 1900. From 1900 to 1950, the number of apples harvested by Harper's Apple Farm increased by 25%. From 1900 to 2000, the number of apples harvested increased by 350%. What was the percentage increase in the number of apples harvested from the year 1950 to the year 2000?  Choose the most appropriate option:
A) 100%
B) 167%
C) 260%
D) 250%
E) 500%
Let x be the number of apples harvested in 1900; then, x + 0.25x = 1.25x is the number of apples harvested for 1900-1950, and x + 3.5x = 4.5x is the number of apples harvested for 1900-2000.   Now, percentage increase in the number of apples harvested from the year 1950 to the year 2000 is (4.5x - 1.25x)/1.25x = 2.6  (4.5  - 1.25 )/1.25= 
<gadget id="calculator"> (4.5  - 1.25 )/1.25</gadget>
<output>2.6</output>
2.6= 260%   Answer is 260%
<result>C</result>
Harper's Apple Farm began expansion of it's apple harvest in 1900. From 1900 to 1950, the number of apples harvested by Harper's Apple Farm increased by 25%. From 1900 to 2000, the number of apples harvested increased by 350%. What was the percentage increase in the number of apples harvested from the year 1950 to the year 2000?