The average (arithmetic mean) of the integers from 100 to 400, inclusive, is how much greater than the average of the integers from 50 to 250, inclusive?
Choose the correct choice from the following
A) 100  B) 175  C) 200  D) 125  E) 300
For an AP the mean or average of series is average of first and last term.   So, average of numbers between 100 to 400, inclusive = (100+400)/2= 
<gadget id="calculator">(100+400)/2</gadget>
<output>250</output>
250   average of numbers between 50 to 250, inclusive= (50+250)/2= 
<gadget id="calculator">(50+250)/2</gadget>
<output>150</output>
150   difference= 250 - 150= 
<gadget id="calculator">250 - 150</gadget>
<output>100</output>
100   100nswer is 100
<result>A</result>
The average (arithmetic mean) of the integers from 100 to 400, inclusive, is how much greater than the average of the integers from 50 to 250, inclusive?