in an ap the difference is between the 8th and 4th term is 20 and the 8th term is one and the half times the fourth term what is the common difference

Answer 1

since T8 = T4+4d, d=5

and, just for completeness,

a+7d = 3/2 (a+3d)
a+35 = 3/2 (a+15)
2a+70 = 3a+45
a=25

So, the sequence is

25 30 35 40 45 50 55 60 ...

Answer 2

This not what I asked for

Answer 3

In an AP the difference between the 8th and 4th terms is 20and the 8th is one and half x the 4th term
(i) Find the common difference
(ii) Find the first term

Answer 4

a+7d=3/2

Answer 5

I will fail my assignment