Question 332108
D=RT
D=100T FOR TRAIN A.
D=104(T-.5) FOR TRAIN B.
THE DISTANCES ARE THE SAME SO SET THE 2 EQUATIONS EQUAL & SOLVE FOR T.
100T=104(T-.5)
100T=104T-52
100T-104T=-52
-4T=-52
T=-52/-4
T=13 HOURS AFTER TRAIN A LEAVES THE STATION TRAIN B WILL CATCH TRAIN A.
PROOF:
100*13=104(13-.5)
1,300=1,352-52
1,300=1,300