Asked by Nadz
A motorist drives at a constant speed of X km/h for 40k and then increases the speed by 20km/h to travel the next 250km. If the whole journey takes 3 hours,calculate X.
Answers
Answered by
Steve
since time = distance/speed,
40/x + 250/(x+20) = 3
40/x + 250/(x+20) = 3
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