SSC CHSL MATHS QUIZ

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Question 1:

A man takes 2 hours to swim 25 km downstream. He swims 19 km upstream in the same time. What is the speed (in km/hr ) of the current ?

Question 2:

The speed of a boat in still water is 15 kmph and the speed of the current is 3 kmph. It takes a total of 13.5 hours to row upstream from point A to B and downstream from Point B to A. What is the total distance covered by the boat from A to B? (both upstream and downstream)

Question 3:

A boatman can row his boat in still water at a speed of 9 km/h. He can also row 44 km downstream and 35km upstream in 9 hours. How much time (in hours) will he take to row 33 km downstream and 28km upstream?

Question 4:

A boat takes 14 minutes to travel $8.4 \mathrm{~km}$ upstream. If the ratio of the speed of the boat to that of the stream is $6: 1$, then how much time (in minutes) will the boat take to travel $33.6 \mathrm{~km}$ downstream?

Question 5:

Sum of the speed of the boat in upstream and downstream is $36 \mathrm{~km} / \mathrm{h}$. The speed of the stream is $3 \mathrm{~km} / \mathrm{h}$. find the time taken to cover the $52.5 \mathrm{~km}$ upstream, assume the speed of the boat in still water is constant throughout.

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:

A boat can row $72 \mathrm{~km}$ downstream and 48 $\mathrm{km}$ upstream taking 8 hours each time. What is the speed of the water current? (in $\mathrm{km} / \mathrm{hr})$

Question 8:

A man can row at the rate of 9km/h in still water. If the speed of the current is 5 km/h , then he takes 25 hours more in upstream than downstream. The distance is :

Question 9:

A boat covers 75 kms in 5 hrs when moving downstream. If speed of current is 75% less than that of the boat in still water then time(in hours) required for the boat to cover this distance in upstream?

Question 10:

A motor boat travelling at the same speed can cover $25 \mathrm{km}$ upstream and $39 \mathrm{km}$ downstream in $8$ hours. At the same speed, it can travel $35 \mathrm{km}$ upstream and $52 $km downstream in $11$ hours. The speed of the stream is-