trains a and b are traveling in the same direction on parelle tracks . train A is traveling 80mph and train b is traveling at 90mph . train A pasess a station at 1:25 am if train B passes the same station at 1:55 am what time will train B catch up with train A?

Question

anonymous · Answer

Train A=  80t+.5*80
Train B=  90t
80t+40=90t
40=10t
t=4

anonymous · Answer

huh?

anonymous · Answer

its asking what time?

anonymous · Answer

you set 1:25am as t=0, so at t=4, it will be 1:25am + 4 hrs or 5:25am