Question : A boat takes half the time to move a certain distance downstream than upstream. The ratio of the speed of the boat in still water to that of the current is:

Option 1: $2:1$

Option 2: $1:2$

Option 3: $4:3$

Option 4: $3:1$

Question : A car covers a certain distance in 25 hours. If it reduces the speed by $\frac{1}{5}$th, the car covers 200 km less in that time. The speed of the car is:

Option 1: 60 km/hr

Option 2: 30 km/hr

Option 3: 40 km/hr

Option 4: 50 km/hr

Question : A truck covers a distance of 550 metres in one minute whereas a bus covers a distance of 33 km in $\frac{3}{4}$ hour. Then the ratio of their speeds is:

Option 1: 1 : 3

Option 2: 2 : 3

Option 3: 3 : 4

Option 4: 1 : 4

Question : A boat covers a certain distance against the stream in 9 hours 36 min and it covers the same distance along the stream in 6 hours. What is the ratio of the speed of the boat in still water to that of the stream?

Option 1: 13 : 3

Option 2: 9 : 2

Option 3: 11 : 6

Option 4: 8 : 5

Question : A covered a distance of 240 km at a certain speed. Had his speed been 8 km/hr less, then the time taken would have been one hour more for covering the same distance. How much time (in hours) will he take to cover a distance of 480 km at his original speed?

Option 1: 9

Option 2: 11

Option 3: 10

Option 4: 8