Attempt now to get your rank among 76 students!

Question 1:

A motor boat has speed $30 \mathrm{~km} / \mathrm{h}$ in still water. It goes $60 \mathrm{~km}$ down stream and comes back in $\frac{9}{2}$ h. What is the speed of the stream?

Question 2:

A man covers a certain distance in Downstream and come back to starting point in Upstream and takes total 32 hours . If speed of man in still water is 8 km/h and speed of current is 5 km/h then find the distance between both point .

Question 3:

A boat can cover a distance of $7.2 \mathrm{~km}$ downstream and $3.2 \mathrm{~km}$ upstream in 2 hours. It can also cover $1.5 \mathrm{~km}$ downstream and $0.6$ $\mathrm{km}$ upstream in 24 minutes. What is the speed of boat when going downstream (in $\mathrm{km} / h$)?

Question 4:

The time taken by a boat to row 21 km with the stream is same as the time taken by it to row 12 km against the stream. If the speed of boat in still water is 5.5 kmph, find speed of stream?

Question 5:

Prakash can row a distance of 1250 meters in still water by boat in 10 minutes. He takes twice the time to row the boat against the stream than in the downstream. Find the speed of the stream.

Question 6:

vikrant can row a boat $24 \mathrm{~km}$ upstream in 1 hour 12 minutes. If the speed of the current of the river is $1.5 \mathrm{~km} / \mathrm{h}$, then how much time will he take to row the boat $57.5 \mathrm{~km}$ downstream?

Question 7:

If the upstream speed of a boat is $40 \%$ less than downstream speed of the boat and if a paper boat is thrown in the river it covers 120 metre in $60 \mathrm{sec}$, then how much distance an original boat can cover in still water in 1-5 minutes?

Question 8:

The speed of a boat in still water is $18 \mathrm{~km/h}$ and the speed of the stream is $3 \mathrm{km/h}$. Suresh rows to a place at a distance of $105 \mathrm{~km}$ and comes back to the starting point. The total time taken by him is:

Question 9:

$A$ and $B$ are two points in a river. Points $C$ and D divide the straight line AB into 3 equal parts. The river flows along AB and the time taken by a boat to row from $\mathrm{A}$ to $\mathrm{D}$ and from $\mathrm{B}$ to $\mathrm{D}$ are in the ratio $4: 5 .$ The ratio of the speed of the boat and that of the river stream is equal to:

Question 10:

Ratio of speed of a boat in upstream  to its speed in downstream is $3: 7$. If speed of boat in still water is $35 \mathrm{~km} / \mathrm{hr}$, then, find the distance covered by the boat in upstream in 8 hours ? (in km)