exam Maths Puzzle Numerical Ability

the length of a rectangle is 3 times the width, and the perimeter is 22. find the dimensions of the retangle.

width is length is

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If the minute hand of a big clock is 1.12 m long, find the rate at which its tip is moving in centimeters per minute.

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Solve the system of equations by the Gaussian elimination method:
1. Solve the system of equations by the