Monday, April 5, 2010

Speed 2009 SA1 P2 RGS Q3

3. At 10 am, Andy drove from Town A to Town B at an average speed of 100 km/h. At the same time, Jeremy drove from Town B towards Town A at an average speed of 95 km/h. They met at 12.30 pm. Find the distance between Town A and Town B.


          2 h           1/2 h
   !--------------!-------------!
10 am        12 pm      12.30 pm 

100 + 95 = 195 km/h

195 x 5/2 = 487.5 km

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