The ratio of 6th and 8th term of of an ap is 7:9 find the the ratio of of 9th term to
13th term.
Answers
Answered by
4
Answer:
5:7
Step-by-step explanation:
let 6th term= 7x and 8th term= 9x
a+5d= 7x-----------1
a+7d= 9x ------2
subtracting 2 from 1
-2d= -2x
d= x
7x= a+5x
a= 2x
9th term: 13th term
a+ 8d : a+12d
2x + 8x : 2x+ 12x
10x: 14x
5:7
Similar questions