Question 834032
The truck has been traveling on the highway for 11 minutes and the car travels on this highway for t minutes; when the two reach the same position, the truck had traveled for t+11 minutes.


____________speed____________time(hours)_______________distance
truck_______60_______________t+11/60__________________d
car_________72_______________t________________________d


That LOOKS like two variables as unknown, but you also will make TWO equations using these variables.


{{{60(t+11/60)=d}}} and {{{72t=d}}} and d is the same value in both equations.
{{{60(t+11/60)=72t}}}
{{{60t+11=72t}}}
{{{11=12t}}}
{{{highlight(t=11/12)}}} miles; not quite a full mile.