Question : A car completed a journey of 400 km in $12\frac{1}{2}$ hours. The first $\frac{3}{4}$th of the journey was done at 30 km/hr. Calculate the speed for the rest of the journey.

Option 1: 45 km/hr

Option 2: 25 km/hr

Option 3: 40 km/hr

Option 4: 30 km/hr

Question : A takes 2 hours 30 minutes more than B to walk 40 km. If A doubles his speed, then he can make it in 1 hour less than B. What is the average time taken by A and B to walk a 40 km distance?

Option 1: 7 hours 15 minutes

Option 2: 5 hours 45 minutes

Option 3: 6 hours

Option 4: 5 hours 15 minutes

Question : A motorcyclist left $6\frac{6}{9}$ minutes later than the scheduled time but to reach its destination 21 km away on time, he had to increase his speed by 12 km/hr from the usual speed. What is the usual speed (in km/h) of the motorcyclist?

Option 1: 28

Option 2: 35

Option 3: 42

Option 4: 64

Question : A man goes from place A to B at a speed of 12 km/hr and returns from B to A at a speed of 18 km/hr. His average speed for the entire journey is:

Option 1: $14 \frac{2}{5} \mathrm{~km} / \mathrm{hr}$

Option 2: 15 km/hr

Option 3: 6 km/hr

Option 4: 30 km/hr

Question : A boat can travel 104 km downstream in 8 hours. If the speed of the stream is 2 km/hr, then at what time will it be able to cover 13 km upstream?

Option 1: $2 \frac{2}{3}$ hours

Option 2: $1 \frac{4}{9}$ hours

Option 3: $2 \frac{1}{2}$ hours

Option 4: $1 \frac{2}{3}$ hours