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1 year ago

two trains leave towns 480 km apart at the same time and travel toward each other. one train travels 18 km/h faster than the oth

er. If they meet in 2 hours what is the rate of each train?

Mathematics

1 answer:

KonstantinChe [14]1 year ago

3 0

$\begin{gathered} \text{Let assume one train spe}ed\text{ is x km/h} \\ \text{Second train spe}ed\text{ is }\Rightarrow(x+18)\text{ km/h} \\ \text{They m}eet\text{ in 2 hour,so} \\ 2=\frac{480}{x+x+18} \\ 2x+18=\frac{480}{2} \\ 2x=240-18 \\ x=\frac{222}{2} \\ x=111\text{ km/h (1st train spe}ed) \\ x+18=111+18=129\text{ km/hr (2nd rain sp}eed)\text{ } \end{gathered}$

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See attachment for graph (1)

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See attachment for graph (1)

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