Question 677288
Let {{{ t [1] }}} = time spent canoeing
Let {{{ t[2] }}} = time spent driving
Let {{{ s }}} = his speed driving
{{{ t[1] + t[2] = 2/( s - 50 ) + 1/s }}}
(a)
{{{ t = t[1] + t[2] }}}
{{{ t(s)  = 2/( s-50 ) + 1/s }}}
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(b)
{{{ s - 50 = 3 }}}
{{{ s = 53 }}}
{{{ t(s)  = 2/( 53-50 ) + 1/53 }}}
{{{ t(s) = 2/3 + 1/53 }}}
{{{ t(s) = .6667 + .01887 }}}
{{{ t(s) = .68557 }}}
{{{ .68557*60 = 41.134 }}}
The trip will take 41.1 minutes