“Insulin has inelastic demand because: (1) it is a life-saving necessity, so consumers cannot easily reduce usage; (2) there are few close substitutes; (3) for most diabetics, insulin costs are a small proportion of income, so price changes have little effect on quantity demanded.”
Compare your answer to a mark scheme (from past papers) to see how many marks it would earn. A 2-mark “explain” question needs two clear reasons. Building an Effective Study Routine with Susan Grant’s Workbook Here is a weekly study plan that maximises the workbook without relying on illicit answers: Cambridge Igcse Economics Workbook Answers Susan Grant
So, by all means, search for “Cambridge IGCSE Economics Workbook Answers Susan Grant”—but use this article as a guide to find the right kind of help: not a list of final answers, but the methods, resources, and study habits that produce correct answers independently. “Insulin has inelastic demand because: (1) it is
| Type of Source | Reliability | Legality | Educational Value | |----------------|-------------|----------|--------------------| | Unofficial PDFs with answers | Low (often wrong) | Copyright violation | Negative (encourages copying) | | Student-shared answer sheets | Very low (errors common) | Grey area | Negative (no feedback) | | Official Teacher’s Resource (with answers) | High | Requires purchase | High (when used for checking) | | YouTube worked solutions | Medium-High | Legal (if original) | High (if you attempt first) | | Tutoring websites with model answers | Medium | Usually legal | Moderate (use sparingly) | | Type of Source | Reliability | Legality
Below is a comprehensive article on that topic. Introduction For students pursuing the Cambridge IGCSE Economics (0455) syllabus, Susan Grant’s Cambridge IGCSE Economics Workbook is an indispensable companion to the core textbook. Designed to reinforce understanding through structured activities, calculations, and data-response questions, the workbook is a bridge between theoretical knowledge and exam-ready application.