Use the following information to answer the next question A jogger runs at 25 km/h (25° N of W] for 34 min and then changes direction, jogging
for 21 min at 21 km/h [65º E of N].

Determine the jogger's total displacement, and his average velocity for the workout.

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.