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Quantitative Aptitude

Boats & Streams

Cities P and ...

Question

Cities P and Q are in different time zones. P is located 3000 km east of Q. The table below describes the schedule of an airline operating non-stop flights between P and Q. All time indicated are local and on the same day.
$\begin{matrix} D e p a r t u r e & A r r i v a l C i t y & T i m e & C i t y & T i m e Q & 8 a m & P & 3 p m P & 4 p m & Q & 8 p m \end{matrix}$
Assume that planes cruise at the same speed in both directions. However the effective speed is influenced by a steady wind blowing from east to west at 50 km per hour.
What is the time difference between P and Q?

A

2 hrs

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B

2 hrs 30 min

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C

1 hr

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D

1 hrs 30 min

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Solution

The correct option is C 1 hr
Option C is the correct answer. Check the video for the approach.

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Similar questions

Q. Cities P and Q are in different time zones. P is located 3000 km east of Q. The table below describes the schedule of an airline operating non-stop flights between P and Q. All time indicated are local and on the same day.

\begin{matrix} D e p a r t u r e & A r r i v a l C i t y & T i m e & C i t y & T i m e Q & 8 a m & P & 3 p m P & 4 p m & Q & 8 p m \end{matrix}

Assume that planes cruise at the same speed in both directions. However the effective speed is influenced by a steady wind blowing from east to west at 50 km per hour.
What is the plane’s cruising speed in km per hour?

P

Q

start at the same time from city

A

B

60

P

40

km/hr slower than

Q

Q

B

and at once turns back meeting

P

12

B

.What is the speed of

P

?

P

Q

are two railways stations which are

560

km apart. An express train leaves stations

P

Q

55

km/hr and a passenger train leaves station

Q

P

25

km/hr, both at the same time. Find when and where will the both trains meet.

P

Q

110

k m

A

started from city

P

7

a . m .

at the speed of

20

k m / h r

B

started from city

Q

8

a . m .

at the speed of

25

k m / h r,

The distance between P and Q along a river is 120km. The speed of the river current is 3km/hr from P to Q. A boat takes 10 hrs to travel from P to Q. Whal time will it take to return from Q to P ?

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