Question 835642
Her normal rate of travel is:
{{{ 20 / 14 }}} mi/min
{{{ 10 / 7 }}} mi/min
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{{{ d = r*t }}}
{{{ 28 = ( 10/7 )*t }}}
{{{ t = ( 7/10 )*28 }}}
{{{ t = 19.6 }}}
It will take her 19.6 minutes