UP POLICE MATHS QUIZ

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Question 1:

Down stream speed of boat is $14 \mathrm{~km} / \mathrm{h}$. Upstream speed of boat is $10 \mathrm{~km} / \mathrm{h}$. In how much time can it cover $72 \mathrm{~km}$ in still water?

Question 2:

A person rows upstream a distance of $65 \mathrm{~km}$ in 5 hours and rows downstream a distance of $57 \mathrm{~km}$ in 3 hours. How much time will he take to row a distance of $72 \mathrm{~km}$ in still water?

Question 3:

A man can row $30 \mathrm{~km}$ upstream in 6 hours. If the speed of the man in still water is $6 \mathrm{~km} / \mathrm{hr}$, find how much he can row downstream in 5 hours.

Question 4:

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 5:

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 6:

A boat covered a distance of $18 \mathrm{~km}$ upstream in 6 hours and a distance of $49 \mathrm{~km}$ down stream in 7 hours. The speed of a stream in $\mathrm{km}$.

Question 7:

Ratio between speed of boat in still water to speed of stream is $7: 3$. In downstream, boat can cover $180 \mathrm{~km}$ in 4 hours, then find the difference between speed of boat in still water and speed of stream.

Question 8:

A man can row at $9 \mathrm{~km} / \mathrm{h}$ in still water. It takes him equal time to go $33 \mathrm{~km}$ downstream and to go $21 \mathrm{~km}$ upstream. Find the speed of the stream (in $\mathrm{km} / \mathrm{h})$.

Question 9:

A man rows down a river 30 km in 6 hrs with the stream and returns in 10 hrs. The speed at which he rows in still water is:

Question 10:

A boat can go 10 km upstream and 11 km downstream in a total time of 52 minutes. If the speed of the stream is 5 km/h, then what is the speed (in km/h ) of the boat when going downstream ?