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VAR_TEST.QSX
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Text File
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1991-12-18
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697b
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24 lines
t:0.001
v:x
r:$rate1:10*random+60
r:$distance:100*random+500
q:Two trains at the station depart in opposite directions. One train travels
q:at $rate1 miles/hour and the other at x miles/hour. Give an expression
q:(in x) for the time at which they will be $distance miles apart?
a:$distance / ($rate1 + x)
e1:1
e21:After one hour they will still be $rate1 + $rate2 miles apart.
e1:$distance / ($rate1 - x)
e21:Perhaps you made a sign error.
e22:Remember that the distance between the trains is always increasing.
e23:Line 3
e24:Line 4
e25:Line 5
e26:line 6
e27:line 7
e28:line 8
e29:line 9
h:Each hour they will travel $rate1 + $rate2 miles further apart.
End of question