The sum of the first 48 terms of an arithmetic series is 4 times the sum of the first 36 terms of the same series.
Find the sum of the first 30 terms of this series.
Practise Edexcel IGCSE Maths Sequences (Higher) with exam-style questions for IGCSE Maths. 4 questions, matched to the Edexcel IGCSE Maths (4MA1) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
