Linear Applications – Harder Versions 1)Cindy leaves by plane to visit her son at college 420 miles away. 15 minutes later, her son leaves his apartment.

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Presentation transcript:

Linear Applications – Harder Versions 1)Cindy leaves by plane to visit her son at college 420 miles away. 15 minutes later, her son leaves his apartment to meet her at the airport. It took Cindy’s son a half hour to drive the 20 miles to the airport. If he reached the airport at the same time the plane was landing, how fast was the plane going?

Harder Distance Question: 2) Joe takes a rowboat upstream for 3 hours. He stops, eats lunch, and rows back the same distance. This time it takes 2.5 hours. If he is rowing at a constant rate of 4 miles per hour, what is the speed of the current?

Harder Working together problem: 3) Corey is filling his bathtub up. The faucet can fill the tub in 5 minutes, and the drain can empty the tub in 8 minutes. Corey accidentally leaves the drain open while filling the tub for his nightly bath. How long does it take the bath-tub to fill up?