Quiz Discussion

A boat covers a certain distance downstream in 1 hour, while it comes back in \(1\frac{1}{2}\) hours. If the speed of the stream be 3 kmph, what is the speed of the boat in still water?

 

Course Name: Quantitative Aptitude

  • 1] 12 kmph
  • 2] 13 kmph
  • 3] 14 kmph
  • 4] 15 kmph
  • 5] None of these
Solution
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# Quiz
1
Discuss

The speed of a boat downstream is 15 km/hr and the speed of current is 3 km/hr. Find the total time taken by the boat to cover 15 km upstream and 15 km downstream.

  • 1] 2 hours 40 minutes
  • 2] 2 hours 42 minutes
  • 3] 2 hours 10 minutes
  • 4] 2 hours 30 minutes
Solution
2
Discuss

The speed of a boat along the stream is 12 km/hr and against the stream is 8 km/hr. The time taken by the boat to sail 24 km in still water is?

  • 1] 2 hrs
  • 2] 3 hrs
  • 3] 2.4 hrs
  • 4] 1.2 hrs
Solution
3
Discuss

A man's speed with the current is 15 km/hr and the speed of the current is 2.5 km/hr. The man's speed against the current is:

  • 1]

    8.5 km/hr

  • 2]

    9 km/hr

  • 3]

    10 km/hr

  • 4]

    12.5 km/hr

Solution
4
Discuss

A boat moves downstream at the rate of 1 km in \({ \text{7}}\frac{1}{2}\) minutes and upstream at the rate of 5 km an hour. What is the speed of the boat in the still water?

 

  • 1]

    8 km/hour

  • 2]

    \({ \text{6}}\frac{1}{2}\) km/hour

  • 3]

    4 km/hour

  • 4]

    \({ \text{3}}\frac{1}{2}\) km/hour

Solution
5
Discuss

On a river , Q is the mid - point between two points P and R on the same bank of the river. A boat can go from P to Q and back in 12 hours, and from P to R in 16 hours 40 minutes. How long would it take to go from R to P?

  • 1]

    \({ \text{3}}\frac{3}{7}\) hr

  • 2]

    5 hr

  • 3]

    \({ \text{6}}\frac{2}{3}\) hr

  • 4]

    \({ \text{7}}\frac{1}{3}\) hr

Solution
6
Discuss

The speed of a boat in still water is 10 km/hr. If it can travel 26 km downstream and 14 km upstream at the same time, the speed of the stream is-

  • 1] 2 km/hr
  • 2] 2.5 km/hr
  • 3] 3 km/hr
  • 4] 4 km/hr
Solution
7
Discuss

A man can row 6 km/hr in still water. If the speed of the current is 2 km/hr he takes 4 hours more in upstream than the downstream. The distance is?

  • 1] 30 km
  • 2] 24 km
  • 3] 20 km
  • 4] 32 km
Solution
8
Discuss

P, Q and R are three towns on a river which flows uniformly. Q is equidistant from P and R. I row from P to Q and back in 10 hours and I can row from P to R in 4 hours. Compare the speed of my boat in still water with that of the river.

  • 1] 4 : 3
  • 2] 5 : 3
  • 3] 6 : 5
  • 4] 7 : 3
Solution
9
Discuss

A man can row three-quarters of a kilometer against the stream in \(11\frac{1}{4}\) minutes and down the stream in \(7\frac{1}{2}\) minutes. The speed (in km/hr) of the man in still water is:

 

  • 1] 2
  • 2] 3
  • 3] 4
  • 4] 5
Solution
10
Discuss

A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 68 km downstream.

  • 1] 2 hours
  • 2] 3 hours
  • 3] 4 hours
  • 4] 5 hours
  • 5] None of these
Solution
# Quiz