Question 34.how can i start to solve?

Pretty simple actually, you just take the number of cases given and multiply it by .20 or 20%, and subtract that number from 10,000, which is 8,000. Then you just keep multiplying the answers you get by .2, and subtract that number by the last answer you got.

i used to know how to do this in 7th but i forget easily

step-by-step explanation:

c) the median for town a 30" is greater than the median for town b 25"

step-by-step explanation:

town a, median = q2 = 30

town b, median - q2 = 25

so the median for town a 30" is greater than the median for town b 25"