A child is in danger of drowning in the merimac river. The merimac river has a current of 3. 1 km/hr to the east. The child is 0. 6 km from the shore and 2. 5 km upstream from the dock. A rescue boat with speed 24. 8 km/hr (with respect to the water) sets off from the dock at the optimum angle to reach the child as fast as possible. How far from the dock does the boat reach the child?

a

Explanation:

because a

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