Question 1070747
{{{ t = d/r }}}
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(1) 
{{{ t[1] = 400/60 }}}
{{{ t[1] = 6 + 2/3 }}} hrs
{{{ (2/3)*60 = 40 }}}
6 hrs and 40 min
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(2) 
{{{ t[2] = 150/40 }}}
{{{ t[2] = 3 + 3/4 }}}
{{{ (3/4)*60 = 45 }}}
3 hrs and 45 min
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(3) 
{{{ t[3] = 10/25 }}}
{{{ t[3] = 2/5 }}}
{{{ (2/5)*60 = 24 }}}
24 min
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Add the hrs
{{{ 6 + 3 = 9 }}} hrs
Add the min
{{{ 40 + 45 + 24 = 109 }}}
{{{ 109/60 = 1 + 49/60 }}} or
1 hr and 49 min
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The total driving time is:
10 hrs and 49 min
* check the math *