tchloe448
01.10.2019 •
Mathematics
Two buses leave at the same time traveling in opposite directions. one bus travels at 63mph and the other at 62mph. how soon will they be 187.5
miles apart?
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Ответ:
the buses are traveling in opposite directions, but both are taking off at the same time
let's say bus A is going at 63mph and bus B is going at 62mph, so, we know their "r" rate for each
ok, after they had travelled for "t" time, they're both 187.5 miles apart, at that instant, bus A has been travelling for "t" hours and bus B has been also travelling for "t" hours as well
now, if bus A covered say "d" miles in those "t" hours, then bus B covered the slack from 187.5 and "d", or 187.5 - d
thus
solve for "t".
Ответ: