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Question on Geometric sequence

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Hi guys,

Can you please help me with this question and explain to me the method of workout as i find it really confusing to get to the answer .

Here is the question :

The sum of the first three terms of a geometric sequence is 62.755, and the sum of the infinite sequence is 440. Find the common ratio

Thnx

Keshuv 19

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The Answer I got was 1.047; although I took r>1. Does this really matter ? The answer changes when doing it in the inverse direction, i.e. r<1 , r =0.952.

Thnx again

Edited by Keshuv19

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