exam Maths Puzzle Numerical Ability

The Perimeter of a rectangle is 600. The length of the rectangle is 2 more than 3 times the width.

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exam Other Question

The difference between the squares of two consecutive odd numbers is 88. Find the numbers. how would i find the equation for perpendicular lines (2 of them are intersecting), when one has the points (-1,1),(5,3), and the other (3,-2),(1,4)???