Question 67277
1/1.5(X+1)=1/2X
1/(1.5X+1.5)=1/2X
2X=1.5X+1.5
2X-1.5X=1.5
.5X=1.5
X=1.5/.5
X=3 LAPS FOR THE "B" CAR 
PROOF
3*2=(3+1)1.5
6=4*1.5
6=6 MINUTES WHEN THE PASS