koala wrote:
To find the median we have to arrange the values in ascending order first. How would we even achieve this? I know plugging n the numbers won't work. What is the strategy behind this question?
to ans your question , let see -
30 days were given, to find median of 30 days is avg of 15th and 16th day.
we are provided with equations for 1st half of month and other 15 days for remaining half.
for first equation, put x=15 you will get 6 and put 15 in second equation you will 6.85
taking average 6 and 6.85 is less than 7.85 .
hence option b is your ans.