A geometric sequence has all positive terms. The sum of the first two terms is 15 and the sum

A geometric sequence has all positive terms. The sum of the first two terms is 15 and the sum

Mathematics Higher Level for the IB Diploma | 7 Sequences and series page 210 | Exercise 7G | question 5 A geometric sequence has all positive terms. The sum of the first two terms is 15 and the sum to infinity is 27. Find the value of (a) the common ratio (b) the first term.