For an AP the 7th term is 32 and the sum of the first 7 terms is 147

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

Problem

For an AP the 7th term is 32 and the sum of the first 7 terms is 147. Find: (i) the 15th term, (ii) the sum of the first 15 terms.