book Maths Puzzle Numerical Ability

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One number is 4 times another.The sum of the numbers is 65. Find the numbers

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1. A designer, attempting to arrange the characters of his artwork in the form of a square grid with equal number of rows and columns, found that 24 characters were left out. A nonregular hexagon has 5 exterior angle measures of 52, 58, 68, 54, and 55. What is the measure of the interior angle adjacent to the sixth exterior angle?