Which of the following is not a benefit of improved cardio - respiratory fitness

the higher the current the higher the mag field around it the higher the influence on the compass

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

the answer is the index of refraction of the second medium is higher. i just took the test.