Question 934970
S=TOTAL DISTANCE TRAVELED

S-2/3S=30

S=90MILES 

SO, 2/3S=60MILES 

SOLVE FOR TIME TRAVELED WITH IN 60 MILES @ 12MILES/HR

DISTANCE=VELOCITY X TIME 
 T=S/V
T=60/12
T=5HRS
TOTAL TIME OF JOURNEY =5+3=8HRS.....ANSWER