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Solution to The Case of the Kidnapped Kishu

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1) 52.4 1000 feet / 5280 feet per mile = 0.189 miles. 13 seconds / 60 seconds per minute = 0.217 minutes. 0.217 minutes / 60 minutes per hour = 0.0036 hours. Distance/time = speed so 0.189 miles / 0.0036 hours = 52.4 miles per hour 2) 74.2 An hour and 25 minutes passes between 8:35 and 10:00 which is equal to 60 + 25 = 85 minutes. 85/60 = 1.42 hours. Speed x Time = Distance so 1.42 hours x 52.4 mph = 74.2 miles. 3) 89.5 The Kia drives from 8:35 to 12:00 at 52.4 mph. This means it drives for 205 minutes, which is equal to 205/60 = 3.42 hours. Speed x Time = Distance so 52.4 x 3.42 = 179 miles. The artist goes the same distance from 10:00 to 12:00, 2 hours. Distance/Time = Speed so he is going 179/2 = 89.5 mph. 4) 9.1 10.7 The area of the circle is 3.14 x 1.7^2 = 9.1 The circumference is 3.14 x 1.7 x 2 = 10.7

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