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To solve this pair of simultaneous equation I will use the substitution method however the elimination method could also be used here.
Eq1. 3x + 2y = 4
Eq2. 4x + 5y = 17
First rearrange Eq1...

Since 42% of voters are male, 58% must be female. Since 58-42 = 16, the difference of 400 represents 16% of the voters. We can then divide 400 by 16 to get 25, which represents 1% of the voters. 25 x 100 ...

Percentages are a common way you can use maths in every day life. That's why, at GCSE level, there are a lot of questions that put the skills into the context of a real-life problem. Let's use an example,...

£180 / 120 = 3 / 2 = £1.50£1.50 x 100 = £150answer = £150

In algebra, like every topic that is covered in GCSE Maths, there is a set method that you should follow and this will always help you to solve the question. The complicated algebra questions are ones tha...