SOLUTION: If a model car travelled 15 meters in 5 seconds, how fast was it travelling?

Question 840545: If a model car travelled 15 meters in 5 seconds, how fast was it travelling?
Found 2 solutions by stanbon, thejackal:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
If a model car travelled 15 meters in 5 seconds, how fast was it travelling?
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Ans:: (15/5) = 3 meters/sec *(1 km/1000 meters)(3600 sec/1 hr)
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= (3*1*3600)/(1*1000*1) km/hr
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= 3*36 km/hr
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= 108 km/hr
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Cheers,
Stan H.
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Answer by thejackal(72) (Show Source): You can put this solution on YOUR website!
5 --> 15
1 --> ?
cross multiply to get
(1 * 15)/5 = 15/5 = 3 m/s
the question is essentially asking how much distance is covered in every second by the car.
ref: http://en.wikipedia.org/wiki/Cross-multiplication
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