60. The sum of an infinite geometric series with first term a and common ratio r < 1 is given by . The sum of a given infinite geometric series is 200, and the common ratio is 0.15. What is the second term of this series?

Answer and Explanation

Your Answer is

Correct Answer is F

Explanation

The stem of the question gives the summation formula of the geometric sequence when the common ratio r<1. It is also known that the sum is 200, and the common ratio r=0.15, so the first item a=200×(1-0.15)=170 can be obtained. So the second term a2=170×0.15=25.5. Choose F.