In a GP, the first term is 3. The sum of the first n terms is 93 and the nth term is…

MATHEMATICS · Multi-part · A Level · Mathematics · Sequences and series · Sequences and series

Problem

In a GP, the first term is 3. The sum of the first n terms is 93 and the nth term is 48. (a) Find the common ratio. (b) Find the value of n.