guesswhoitis21
05.02.2020 •
Mathematics
Atrain leaves city a and travels north at 85 km per hr. another train leaves at the same time and travels south at 95 km per hour. how long will it take before they are 425 km apart?
it will before they are 425 km apart.
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Ответ:
their relative speed is 95+85=180 kmph.
so 180 km/h = 425 km / x => x= 425/180=85/36
Ответ:
$3 for 12 hours = $0.25 an hour
$36 for 9 hours = $4 an hour
i think this is what you're saying...
~Hope this helps!!