Question 899679
Let {{{ s }}} = Rita's paddling speed
Let {{{ c }}} = speed of river's current
Going upstream:
{{{ s - c = 2 }}}
Going downstream:
{{{ s + c = 3 }}}
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add the equations:
{{{ 2s = 5 }}}
{{{ s = 2.5 }}}
and
{{{ s + c = 3 }}}
{{{ 2.5 + c = 3 }}}
{{{ c = .5 }}}
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Rita's paddling speed was 2.5 mi/hr
The speed of river's current was .5 mi/hr