Question

) Find the common difference of an A.P. whose first term is 5
and the sum of the first four terms is half the sum of the next
four terms.​

Answer 1

3468 is the answer for this question

Answer 2

Let D be the common difference.

And A is 5

A\Q. sum of first 4 term=1\2 sum of next four terms

5+(5+d)+(5+2d)+(5+3d)=1\2(5+4d)+(5+5d)+(5+6d)+(5+7d)

° 20+ 6d=20+22d

°d=2