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The best way to revise is by doing practice questions, you can’t just read about the theory, you need to do as much practice as possible. This is why practicing past papers is the number one tip for revis...

To calculate the interest for Max we need to do 2000 multiplied by 1.025³To calculate the interest for Jade we need to do 1600 multiplied by 1.035³At the end of the three years, Max ...

We know there are 6525 more women than men. We can deduce that 5 'parts' = 6525 as 11-6=5If 5 parts = 6525. 1 part = 6525/5 = 1305.We know that 4 parts are children so, 1305 * 4 = 5220Alternatively, once ...

First identify which unknown has the same coefficient. In this case it is y.Either add or subtract the two equations to eliminate y. In this case we subtract one equation from the other (can be either). 3...

Right angle means use Pythagorus:
a² + b² = c²
thereforea² = c² - b² = 7² - 4² = 49-16 ...