CourseCourseConceptConceptDocsDocuments

Edexcel IGCSE Math A Higher 2.3 E Derive a Formula or Expression Questions

Practise translating totals, rates, function machines and geometric relationships into simplified algebraic formulae.

Syllabus
First assessment 2018
Course
Math A 4MA1
Level
Higher

Exam points

  • translate each stated quantity into an algebraic term before combining the total
  • form a formula from a verbal rule, rate or function-machine sequence
  • substitute geometric constraints and simplify step by step to prove a stated formula

Edexcel IGCSE Math A Higher 2.3 E Derive a Formula or Expression Questions question 1

[Maximum number: 2]

In a warehouse there are two types of shelves, type R and type S.
These two types of shelves are arranged into shelving units that form a sequence of patterns.
Here are the first three terms in the sequence.

Figure for Question Edexcel IGCSE Math A Higher 2.3 E Derive a Formula or Expression Questions question 1 — Edexcel IGCSE Math A Higher
Figure for Question Edexcel IGCSE Math A Higher 2.3 E Derive a Formula or Expression Questions question 1 — Edexcel IGCSE Math A Higher

Diagram NOT accurately drawn

The width of each type R shelf is 2.4 m and the width of each type S shelf is 3.5 m

Find an expression for W in terms of n

Give your answer in its simplest form.

W=
All question bank results loaded