GCSE Maths - What are Ratios & How to Simplify Them (Part 1) #81

The video tutorial explains the concept of ratios using marbles as examples. It covers how to define ratios, simplify them by finding common factors, and provides examples with blue, red, and purple marbles. The tutorial also discusses calculating ratios involving total numbers and introduces complex ratios with more than two values.

How can you express the ratio of purple marbles to total marbles?

Can ratios contain more than two values? Provide an example.