The 20th term of an arithmetic progression is 67 and the sum of the first 20 terms is 770

MATHEMATICS · Single correct · A Level · Mathematics · Sequences and series · Sequences and series

Problem

The 20th term of an arithmetic progression is 67 and the sum of the first 20 terms is 770. What is the common difference? (a)

5

(b)

3

(c)

2

(d)

4