Question 297367
D=RT
D=72(T+1/3)
D=78T
72(T+1/3=78T
72T+24=78T
72T-78T=-24
-6T=-24
T=-24/-6
T=4 HOURS.
D=78*4
D=312 MILES. ANS.
312=72(4+1/3)
312=288+24
312=312