Book Maths Puzzle Geometry

The second angle of a triangle is four times as large as the first. The third angle is 5 degrees more than the sum of the other two angles. How do I find the the measurement of t

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The perimeter of a triangle is 195mm. If the lengths of the sides are consecutive odds intergers, how do I find the length of each side? At work, I had to take 75% off products and after working 8 hours my head became mush. I realized later wouldn't it be easier to just lets say the number is $ 5.69 and just divid