Question 1059435
First 40 minutes:  {{{75*(2/3)}}} kilometers distance.


Next t amount of time:  {{{(75+90)t}}} added to the previous distance.


What is t when the sum of these distances is 352.5 kilometers?
{{{75(2/3)+(75+90)t=352.5}}}

Fails to render.  Putting in pure text, that equation is 75(2/3)+(75+90)t=352.5.
Solve for t.