Question

In an A.P 4 term and 8 term are 13 and 36 respectly then the common different is

Answer 1

Answer:

4th term is 13

a4= a+3d

13=a+3d ..........eq1

8th term is 36

a8=a+7d

36=a+7d...........eq2

By elimination method

a+3d=13

a+7d=36

- - = -

__________

-4d=23

d=-23/4

Common difference is -23/4