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Unformatted text preview: 18. The perimeter of a rectangle is 72 meters. If the width is 8 meters less than the length, then what is the width of the rectangle? + + = 2x 2x 8 72 + = 4x 16 72=16 72 16 = 4x 56 = 44x 564 = x 14 + = x 8 22 20. How many liters of a 20% alcohol solution should Maria mix with 50 liters of a 60% alcohol solution to obtain a 30% solution? . + . = . + 0 20x 0 6050 0 30x 50 . + = . 0 20x 15 0 30x = . 15 0 10x = 10 x 20% solution is 150 liters 22. If the degree measure of the smallest angle of a triangle is onehalf of the degree measure of the second largest angle and onethird of the degree measure of the largest angle, then what is the degree measure of each angle? + + = x 2x 3x 180 = 6x 180 = x 30 The angles are °, °, & ° 30 60 90...
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 Spring '09
 JACKWINGER
 Math, Topology, 30°, 30%, 8 meters, 50 liters

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