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Lesson 4-8 Rate-time- Distance Problems

Lesson 4-8 Rate-time- Distance Problems. D = rt D=distance r= speed t= time. 1. At noon a private plane left Austin for Los Angeles, 2100 Km away, flying at 500 km/h. One hour later a jet left Los Angeles for Austin at 700 km/h. At what time did they pass each other?.

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Lesson 4-8 Rate-time- Distance Problems

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  1. Lesson 4-8 Rate-time- Distance Problems D = rt D=distance r= speed t= time

  2. 1. At noon a private plane left Austin for Los Angeles, 2100 Km away, flying at 500 km/h. One hour later a jet left Los Angeles for Austin at 700 km/h. At what time did they pass each other?

  3. 500t + 700(t – 1)=2100 • 500t + 700t – 700= 2100 • +700=+700 • 1200t = 1400 • 1200 1200 • t= 1h and 20 minute • At noon 12 + 1= 13 and 20 minute • Or 1:20 P.M

  4. At 8:00 A.M. the Smiths left a campground, driving at 48 mi/h. At 8:20 A.M the Garcias left the same campground and followed the same route, driving at 60 mi/h. At what time did they overtake the Smiths?

  5. 48 t = 60( t - 1/3) • 48t = 60t - 20 • 12t = 20 t= 50 minute • The Smiths overtake at 8:50

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