Question

4. The sum of the first four terms of an arithmetic series is 20 and the fifth term is five times the
second term. Given that the first term of the series is a and the common difference of the series is
d,
(a) form a pair of simultaneous equations in a and.d. ?
(b) solve these equations to find a and d.
(c) find the sum of the first 40 terms of the series.
[Jan95/Q13(i)/M...

Answer 1

a) form a pair of simultaneous equations in a and.d. ?

(b) solve these equations to find a and d.

(c) find the sum of the first 40 terms of the series.

[Jan95/Q13(i)/