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A train trip |
2015-03-23 |
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Ngcebo pose la question :
A train travels a distance of 720 km at a speed of x km/h. on the return journey, it travels at an average speed of y km/h and completes the whole journey in an hour less. if the speed during the return journey was 10 km/h more, what were the speeds in m/s
Penny Nom lui répond. |
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