Tips And Tricks And Shortcuts For Speed Time and Distance

December 4, 2020

Tips and Tricks and Shortcuts for speed time and distance

Speed is measure that show how quickly an object moves from one place to another. It is equal to the distance traveled divided by the time.

Speed = distancetime  \frac{distance}{time} \

Speed time and Distance Tricks and Shortcuts
  • Check out the important  of Speed, Time and Distance here first if you have not already.
  • Tips and tricks for speed time and distance generally give all the basic idea about what type of questions that are going to asked in different competitive exams and recruitment exams.
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When Distance is constant in the given scenario

Way to Solve type 0 Problem

We all know that Distance = Speed x Time

So, if Distance if constant then this equation will be

S1 x T1 = S2 x T2

Now, most of you will ignore this in the exam and it wouldn’t cross your mind to use this. Even if you understand it now.

But, if you make a habit of reading question properly not just for speed time and distance but for every topic you can solve the question in 1/4th of the time.

Same of this, we had done research on 8 engineering students solving a speed time distance problem only 2 used this formula and both solved the question correctly in 1/4th of the time of other 6 on average.

Example of type 0 Problem

A boy walking at a speed of 15 km/hr reaches his school 20 min late. Next time he increases his speed by 5 km/h but still he late by 5 min. Find the distance of the school from his home.

Let time be x.

So, quick method =>

  • 15(x +20) = 20(x + 5)
  • 300 – 100 = 5x
  • x = 40. => x +20 = 60 mins = 1hr
  • Thus distance = 15(1) = 15 kms

explanation to above

S1 = 15km/h ; S2 = 5 + 15 = 20 km/h

T1 = x + 20 T2 = x + 5

Now just apply the formula

Now Same thing can be applied for Speed and Time also

So the all three formula will be –

  1. S1 x T1 = S2 x T2
  2. D1 / T1 = D2 / T2
  3. D1 / S1 = D2 / S2

Type 1: Speed, Time and Distance Tips and Tricks Unit Conversion Time and Distance Problems

Tricks, Tips and Shortcuts

Ques 1.

A man rides his Bike at a speed of 36 km per hour, calculate the speed in m per second?

A. 7.0
B. 5.5
C. 10
D. 5

Correct Answer C
Solution:

We can convert km per hour by multiplying the given value by 5/ 18.
Therefore, the converted speed = 36 * 5/18
= 10 m per second.

Type 2: Tips and Tricks and Shortcuts for (Average Speed when Traveling to a Place and Returning)

Tricks, Tips and Shortcuts

Ques 2.

G and H are two places. A man travels on his cycle from G to H at a speed of 15km/hr and comes back at the speed of 10km/hr. Find the average speed of his entire journey.

A. 11 km/hr
B. 12km/hr
C. 13km/hr
D. 13.5km/hr

Correct Answer B
Solution:

Let the distance between G and H be a
Then, time taken from G to H = a/15
Then, time taken from H to G = a/10
Therefore, time taken to cover 2a = a/15+a/10 = a/6
Therefore, average speed = 2a/a/6 = 12 km/hr.

Type 3: Shortcuts, Tips and Tricks for Prob’s Based on Changing Time and Changing Speed

Tricks, Tips and Shortcuts

Ques 3.

If Karishma walks a certain distance, at the speed of 8mps, if she walks at a speed of 18mps, she covers 15 miles more. Calculate her total distance.

A. 6
B. 12
C. 17
D. 29

Correct Answer B
Solution:

Let her total distance be= d
Time to cover at the speed of 8 mps.
If she walks 18mph, then she covers 15 miles more than actual distance = d + 15
Therefore, time taken = (d+15)/18.
Then, d/8 = d + 15/18
So, distance covered is 12 m

Type 4: Time and Speed Problems on Trains

Tricks, Tips and Shortcuts

Ques 4.

A train 200m long is moving at a speed of 20 km/hr. How much time will the train take to reach the station?

A. 22
B. 28
C. 36
D. 25

Correct answer C
Solution:

Speed of the train = 20 * 5/18 = 50/9 m/sec
Requisite time = 200 * 9 / 50 = 36 seconds.

Type 5: Problems on Bus with Stoppages

Tricks, Tips and Shortcuts

Ques 5.

The speed of a bus excluding stoppage is 25 km per and including stoppages is 21 km per hour. Find out for how much time the bus stopped per hour.

A. 11.2
B. 9.6
C. 10
D. 25

Correct Answer B
Solution:

The bus travels 4 km less because of the stops.
Time is taken to cover 4 km = 4/25 * 60 = 9.6
The bus stopped for 9.6 minutes

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