The return trip with the Celestine question for took 30 minutes longer than her trip east although her total time was still four hours what was your velocity in each direction

reserve is the answer

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when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min

answerdmitry mendeleyev made a workable classification of the elements