Question 213670
Using 
{{{d = rt}}} substitute d = 100 yds, r = (1760yds/mi)70mi/hr = 123200yds/hr.
{{{100 = (123200)t}}}
{{{t = 100/123200}}}hrs.
{{{t = 8.11X10^(-4)}}}hrs. Multiply by 60 to get minutes.
{{{t = 0.0487}}} minutes. For seconds, multiply by 60.
{{{t = 2.992}}}seconds.