Question 893153
Convert {{{ 30 }}} min to hours
( min ) x ( hrs / min ) = hrs 
{{{ 30*( 1/60 ) = 1/2 }}} hrs
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{{{ d = r*t }}}
{{{ 10 = r*( 1/2 ) }}}
{{{ r = 20 }}}
His speed was 20 mi/hr