Question 902543
_______________speed_______time______distance
_______________60___________x_________d
_______________70__________(___)______d
TOTAL______________________10________2d


Calculate the missing time.


_______________speed_______time______distance
_______________60___________x_________60x
_______________70__________10-x______70(10-x)
TOTAL______________________10________d


The equation to find from the tabulated information is  {{{d=60x+70(10-x)}}}
-
{{{d=60x+700-70x}}}
{{{highlight(d=700-10x)}}}