Question 50423
1/2+1/x+1/2x=1 or (x+2+1)/2x=1 or 2x=x+2+1 or x=3 thus 1/2+1/3+1/2*3=1 or
he had been sleeping 1/3 of the trip.
1/2+1/3+1/6=1 or 3/6+2/6+1/6=1 or 6/6=1 or 1=1