Question

in an arithmetic progression 4th term and 8th term are in the ratio 1 is to 2 if the 10th term is 30 find the arithmetic progression​

Answer 1

Please mark as brainliest.

Answer 2

$\frac{a + 3d}{a + 7d} = \frac{1}{2}$

2a+6d=a+7d

2a-a+6d-7d=0

a-d=0 ——(1)

a+9d=30 ——(2)

Subtracting eqn.1 from 2 we get

9d=30

d=30/9

d=10/3