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Find the sum of the given infinite geometric series​. NO LINKS OR ANSWERING QUESTIONS YOU DON'T KNOW

Find the sum of the given infinite geometric series​. NO LINKS OR ANSWERING QUESTIONS-example-1

1 Answer

3 votes

Answer:

320/3

Explanation:

First find the common ratio

20/80 = 1/4

The sum of an infinite geometric series

sum = a1/ (1-r) where a1 is the first term and r is the common ratio

=80/ ( 1-1/4)

= 80/(3/4)

= 80 *4/3

= 320/3

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