GCSE Secondary Maths Age 13-17 - Number: Multiples and Factors - Explained

The video tutorial explains a math problem where Jen needs to find three numbers: one multiple of nine and two different factors of 40. The sum of these numbers should be greater than 20 but less than 30. The teacher lists multiples of nine and factors of 40, then demonstrates choosing 9, 10, and 5 to achieve a sum of 24. The tutorial also discusses the marks allocation for the problem, emphasizing careful reading of the question.

What are two different factors of 40 that Jen could use?

Explain how Jen arrived at her final answer of 24.