Question : A boat can move upstream at 25 km/hr and downstream at 35 km/hr. What is the speed of the current?

Option 1: 10 km/hr

Option 2: 15 km/hr

Option 3: 5 km/hr

Option 4: 22.5 km/hr

Question : The speed of a car going from A to B is 110 km/hr while coming back, its speed is 76 km/hr. What is the average speed during the entire journey?

Option 1: $87 \frac{81}{99} \mathrm{~km} / \mathrm{hr}$

Option 2: $83 \frac{89}{93} \mathrm{~km} / \mathrm{hr}$

Option 3: $89 \frac{83}{93} \mathrm{~km} / \mathrm{hr}$

Option 4: $82 \frac{91}{97} \mathrm{~km} / \mathrm{hr}$

Question : In a 5 km race, S gave a 500 m head start to T. If they finished the race at the same time and the speed of T is 13.5 km/hr, the speed of S is:

Option 1: 15 km/hr

Option 2: 20 km/hr

Option 3: 17.5 km/hr

Option 4: 16.5 km/hr

Question : Rajinder drives his car at an average speed of 40 km/hr to cover half of his total distance and thereafter he increases his speed to 60 km/hr. He covers his journey in 7 hours. What is the average speed of Rajinder on this journey?

Option 1: 52 km/hr

Option 2: 48 km/hr

Option 3: 50 km/hr

Option 4: 54 km/hr

Question : A ship goes at 18 km/hr downstream and at 16 km/hr upstream. What will be the speed of the ship in still water?

Option 1: 14 km/hr

Option 2: 17 km/hr

Option 3: 16 km/hr

Option 4: 15 km/hr