Question

If the ratio of first n terms of 2 ap is 3n+1:4n+27 then find ratio of 9 terms

Answer 1

Answer:

4 : 9

Step-by-step explanation:

nth term of 1st AP = 3n + 1

9th term is = 3(9) + 1 = 27 + 1 = 28

nth term of 2nd AP = 4n + 27

9th term is = 4(9) + 27 = 36 + 27 = 63

therefore the ratio is

28 : 63

4 : 9