Posted by **dammy** on Friday, November 8, 2013 at 4:44am.

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

- math -
**Steve**, Friday, November 8, 2013 at 5:01am
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 This Question

## Related Questions

- kumasi polytechnic - In A.P the difference between the 8th term and 4th term is ...
- ahisco - In an A.P the difference between the 8th term and 4th term is 20 and ...
- Arithmetic Progression - In an AP the 6th term is half the 4th term and the 3rd ...
- Maths - 1) In the arithmetic progression, the 8th term is twice the 4th term and...
- math - if 4th term of an arithmetic progression is 3 times the 1st term nd 7th ...
- Math - The nth term of an A.P. Is 3 times the 5th term.(a)find the relationship ...
- Mathematics - The 8th term of a linear sequence is 18th and 12th term is 26.find...
- Maths - The 4th term of an AP is 6 if d sum of d 8th and 9th term is -72 the ...
- math - The third term of a geometric progressiom is nine times the first term.if...
- math - The 8th term of ap is 5time the 3rd term, while the 7th term is greater ...

More Related Questions