1/3(21-3a=6-a
what is the value of a

Step-by-step explanation:

First remember, a(c-d)=ac-ad

1/3(21-3a)=6-a then

21/3 - 3/3a =6-a

7-a = 6-a

here it is impossible because if we add a to both sides we get 6=7 which is obviously not true. You might have wrote the question wrong, let me know.

a=24; b=12

step-by-step explanation:

a/b=2: 1

a=2b

36/(1+2)=12

b=12

a=24

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"