<PRE><B>Question 925774</B>
Basic rule is RT=D for rate time distance.  Making a table of data helps.


________________speed_________time_________distance
GOING___________60_____________t___________d
RETURNG_________40____________t+1__________d


Two equations can be formed using the basic rule.


________________speed_________time_________distance
GOING___________60_____________t___________{{{highlight_green(d=60t)}}}
RETURNG_________40____________t+1__________{{{highlight_green(d=40(t+1))}}}

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