exam Maths Puzzle Numerical Ability

A 59-m rope is cut into three pieces. The second piece is twice as long as the first. The third piece is 3m long than the first. How long is each piece of rope?

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exam Other Question

Can anyone give me any tips or examples on factoring the difference between two squares and perfect trinomial squares. Thanks How do I simplify the square root of 5x over the square root of 3 plus the square root of 3x over 5, when they look like fractions?