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If tn be the nth term of an A.P. such that t4/t7 = 2/3 find t8/t9.

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If tn be the nth term of an A.P. such that t4/t7 = 2/3 find t8/t9.

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⇒ 3(a+3d) = 2(a+6d)

⇒ 3a + 9d = 2a + 12d

⇒ 3a – 2a = 12d – 9d

⇒ a = 3d …(i)

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