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Boats and Streams

Authored by PAUL SATHIYAN

Mathematics

10th Grade - University

CCSS covered

Used 8+ times

Boats and Streams
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10 questions

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1.

MULTIPLE SELECT QUESTION

5 mins • 1 pt

A steamer can go 12 km in still water in 25 minutes. One day, it went 11.25 km upstream and returned the same distance in downstream. If the difference between the time taken to travel upstream and downstream was 12.5 minutes, then what was the speed of stream in km per hour?

7.2

5.4

6.3

4.5

2.

MULTIPLE SELECT QUESTION

5 mins • 1 pt

If the upstream speed of a boat is 50% less than the downstream speed of the boat and if a object is thrown in the river it covers 100m in 50 sec, then how much distance boat can cover in still water in 5 hours?

900 m

100 m

120 m

108 m

3.

MULTIPLE SELECT QUESTION

5 mins • 1 pt

A boat goes a certain distance upstream and comes back downstream to the starting point in 144 min. If the speed of the boat in still water becomes 66.67% of the original, time taken for the same journey will be 224 min. What is the ratio of the speed of boat in still water and speed of current?

7:1

6:1

5:3

7:2

4.

MULTIPLE SELECT QUESTION

5 mins • 1 pt

The speed of current is 5 km/h. What will be the respective downstream speed and upstream speed of a boy rowing a boat, if one third of the distance covered going downstream in a certain time is equal to the distance covered going upstream in the same time.

15 kmph, 5 kmph

20 kmph, 10kmph

18 kmph, 8 kmph

24 kmph, 14 kmph

5.

MULTIPLE SELECT QUESTION

5 mins • 1 pt

There are 3 points P, Q and R in a straight line, such that point Q is equidistant from points P and R. A man can swim from point P to R downstream in 24 hours and from Q to P upstream in 16 hours. Find the ratio of speed of man in still water to speed of stream?

5 : 1

6:1

5:3

7:1

6.

MULTIPLE SELECT QUESTION

5 mins • 1 pt

A boat takes 12 hours to cover an upstream distance of 48 km and 6 hours to come back same distance in downstream. What is the speed of boat in steel water?

6 kmph

8 kmph

4 kmph

10 kmph

Tags

CCSS.HSA.CED.A.1

7.

MULTIPLE SELECT QUESTION

5 mins • 1 pt

Rohit and Mohit are coming via boat towards each other from the two banks of a river. They meet after three hours from start. If speed of both boats in still water is 6 kmph and river is flowing from Mohit towards Rohit, then find the distance between two banks.

18 km

36 km

24 km

48 km

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