SSC CHSL MATHS QUIZ

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 ?

1.65

2

1.8

1.5

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)

194.4 km

206.7km

210.5 km

186.3 km

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?

7

5

6

8

Question 4:

A boat takes 14 minutes to travel $8.4 km$ 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 $33.6 km$ downstream?

एक नाव $8.4 km$ प्रतिकूल की यात्रा करने में 14 मिनट का समय लेती है। यदि नाव की गति का धारा की गति से अनुपात $6 : 1$ है, तो नाव को धारा के अनुकूल $33.6 km$ की यात्रा करने में कितना समय (मिनटों में) लगेगा?

30

40

45

36

Question 5:

Sum of the speed of the boat in upstream and downstream is

36 km / h

. The speed of the stream is

3 km / h

. find the time taken to cover the

52.5 km

upstream, assume the speed of the boat in still water is constant throughout.

धारा के प्रतिकूल और अनुप्रवाह में नाव की गति का योग 36 किमी/घंटा है। धारा की गति 3 किमी/घंटा है। धारा के प्रतिकूल

52.5

किमी की दूरी तय करने में लगने वाला समय ज्ञात कीजिए, मान लीजिए कि शांत पानी में नाव की गति पूरे समय स्थिर है।

3 hours

4 hours

3.5

hours

3.5

घंटे

4.5

hours

4.5

घंटे

Question 6:

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

2

3

5

4

Question 7:

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

\frac{2}{3}

\frac{2}{3}

\frac{3}{2}

\frac{3}{2}

\frac{5}{2}

\frac{5}{2}

\frac{4}{3}

\frac{4}{3}

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 :

220km

140 किमी

270km

200km

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?

9

6 \frac{1}{2}

6 \frac{1}{2}

7 \frac{1}{2}

7 \frac{1}{2}

8 \frac{1}{3}

8 \frac{1}{3}

Question 10:

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