how do ratios work
if x and y are in a ratio 3:2 you can write it as 3x=2y so if you are given a value for either you substitute it into this and rearange to get the other value. e.g y = 2 what is x? 3x=2(2) so 4=3x, x=3/4.
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Related Maths GCSE answers
All answers ▸Solve the simultaneous equations 3x+5y=7, 2x-3y=11
How do you solve simultaneous equations?
How to do Difficult Surd Algebraic manipulation questions example: Rationalise the denominator of the expression: 1+5^(1/2) / 3+5^(1/2). Give your answer in its simplest form:
Solve the following simultaneous equation: x^2 + y^2 = 9 X+y=2