The graph converts euros to pounds. Mrs Case has £200 holiday money which she changes into euros. On holiday she spends €180 of her holiday money. At the end of her holiday, she changes her remaining ...

How to solve simultaneous equations using graphs. How much is each ticket? Draw a bar to represent one adult and two children’s tickets. Let’s call the adult ticket 𝑦 and the child ticket 𝑥. Another ...

Little progress had been made in solving Ramsey problems since the 1930s. Now, researchers have found the answer to r(4,t), a longstanding Ramsey problem that has perplexed the math world for decades.