Question 958394
_____________________speed___________time_________distance
Part1_________________70_____________1/2__________(____)
Part2_________________r______________1____________(____)
Total________________________________{{{1&1/2}}}________120


The part2 time of 1 hour comes from the necessary total time being {{{1&1/2}}} hours.


Next, fill the missing cells and formulate the distance equation.


_____________________speed___________time_________distance
Part1_________________70_____________1/2__________{{{70(1/2)}}}
Part2_________________r______________1____________{{{r*1}}}
Total________________________________{{{1&1/2}}}__________120



{{{70(1/2)+r*1=120}}}
{{{35+r=120}}}
{{{r=120-35}}}
{{{highlight(r=85)}}}