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solQ2 - Solutions to Quiz 2 www.math.u.edu/harringt...

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Solutions to Quiz 2 www.math.ufl.edu/˜harringt February 2, 2007 1. (1 pt) Convert the following to a fraction: 0 . 36 Solution: x = 0 . 36 100 x = 36 . 36 - x - . 36 99 x = 36 x = 36 99 = 9 * 4 9 * 11 = 4 11 2. (1 pt) You were on a date, and the bill came to \$42 . 60. You thought the service was fair and so you gave a 15% tip. How much money did you leave for the tip? Solution: First, note that 10% of \$42 . 60 is \$4 . 26. Second, note that 5% of \$42 . 60 is \$4 . 26 2 = \$2 . 13 Hence, 15% of \$42 . 60 is \$4 . 26 + \$2 . 13 = \$6 . 39 3. (1 pt) Determine whether the following statement makes sense or not. (a) I’ve decreased my caloric intake 125%, which has helped me lose weight. Does not make sense. You cannot lower caloric intake below 100%. (b) I needed five acres of water to fill the swimming pool. Does not make sense. Acres describes area, while you need volume to describe how
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