During a race there are 5 drivers named, Takumi , zero , Kaname , Yuuki and Kira who drove their car , mazda rx-7 ,mazda rx-8 ,nissan skyline ,mitsubishi evolution9 and Lamborghini gallardo respectively .Through asia starting from Singapore to Indonesia. The table below show the amount of petrol used per kilometer and the time taken for the race.
A) The cars needs to use the amount of petrol above. Form 2 matrices so that the matrix product can find the total distance in kilometer. Hence, find the average speed.
B) Calculate the total cost of the petrol in dollars used if 1 litre of the petrol cost $2.20.
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