The sum of n terms of two A.P’s are in the ratio of (n + 7): (3n + 11). The ratio of their 9 terms is​

Question

The sum of n terms of two A.P’s are in the ratio of (n + 7): (3n + 11). The ratio of their 9 terms
is​

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Samantha 3 weeks 2021-10-07T11:29:50+00:00 1 Answer 0 views 0

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    2021-10-07T11:31:24+00:00

    Answer:

    8:19

    Step-by-step explanation:

    Let

    AP1 = a1,a2……

    AP2=b1,b2…….

    Sa = n+7

    Sb 3n+11 (given)

    Substituting 9 in place of n,

    = 9 + 7

    3*9 + 11

    = 16

    27 + 11

    = 16

    38

    Brininging ratio into simplest form,

    16 = 8

    38 19

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