b is two thirds of c. 5a = 4c Work out the ratio a : b : c Give your answer in its simplest form where a, b and c are integers
a : c = 4 : 5 and b : c = 2 : 3 so getting a common value of 15 for B gives a : c = 12 : 15 and b : c = 10 : 15 we can now compare these ratios and get 12 : 10 : 15 this is not divisible by any common factor so it is in its simplest form
JC
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All answers ▸White paint costs £2.80 per litre. Blue paint costs £3.50 per litre. White paint and blue paint are mixed in the ratio 3 : 2 Work out the cost of 18 litres of the mixture.
S is a geometric sequence. a) Given that (√x - 1), 1, and (√x + 1) are the first three terms of S, find the value of x. b) Show that the 5th term of S is 7 + 5√2
Simplify: 2x + 6y + 2y - x
How do I solve these two equations simultaneously: 7x+y=1 and 2x^2 - y = 3