Question 437871
The 1st day:
{{{ d = r*t }}}
{{{ d = 40t }}}
The 2nd day:
{{{ d = 56*(t-2) }}}
{{{ d = 56t - 112 }}}
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Since the distance are the same:
{{{ 40t = 56t - 112 }}}
{{{ 16t = 112 }}}
{{{ t = 7 }}}
and, since
{{{ d = 40t }}}
{{{ d = 40*7 }}}
{{{ d = 280 }}}
The distance was 280 mi
check answer:
{{{ d = 56*(t-2) }}}
{{{ 280 = 56*(7-2) }}}
{{{ 280 = 56*5 }}}
{{{ 280 = 280 }}}
OK