Question
A driver can travel 54 km at a constant speed. If he drives 3 km/h faster, he would have saved 3 km/h faster, he would have saved 3 hours. Let x be the speed of him originally, find the value of x.
Answers
since time = distance/speed, you know that
54/x - 3 = 54/(x+3)
Now just solve for x
54/x - 3 = 54/(x+3)
Now just solve for x
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