exam Maths Puzzle Numerical Ability

The golden ratio. The ancient Greeks thought that the most pleasing shape for a rectangle was one for which the ratio of the length to the width was 8 to 5, the golden ratio. If t

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exam Other Question

An alloy of metals is 25% copper another alloy is 50% copper. How much of each alloy is used to make 1000 grams of an alloy with 45% copper.
Can you help us write this equations? If v = 3i-5j and w = -2i + 3j find 3v - 2w.