Time and Distance problems are asked in most of the competitive and
other exams. Usually this type of questions takes time in solving them through
normal way. Time is a crucial term in competitive examinations as you have a
very limited time for solving questions in competitive examination. You have to
save time by solving questions quickly which is very hard to implement. But if
you learn few shortcut methods of solving these question, you can save a quite
appreciable time. You might also know some of the tricks already but here on
this site are very short tricks which will let you solve question on your
fingertips. Here is a shortcut trick #1 for solving distance problems.

First let us learn conversion

For converting m/s into km/h, multiply by 18/5.

For converting km/h into m/s, multiply by 5/18.

Speed=distance/time

Time=distance/speed

Distance=speed*time

also learn the shortcut tricks for Ratio and Proportion problems

also see shortcut tricks for TIME AND WORK PROBLEMS

FOR ALL THE TRICKS OF QUANTITATIVE APTITUDE, PLEASE CLICK ON TRICKS TAB GIVEN ON NAVIGATION BAR ON TOP OF SITE.

also see shortcut tricks for TIME AND WORK PROBLEMS

FOR ALL THE TRICKS OF QUANTITATIVE APTITUDE, PLEASE CLICK ON TRICKS TAB GIVEN ON NAVIGATION BAR ON TOP OF SITE.

We will understand this trick with an example.

Q:- A train covers a distance of 50 km with a speed of 40km/hr and next 60 km with a
speed of 30 km/hr in travelling from A
to B . What will be the train’s average speed during the whole journey?

Now here is a shortcut trick rule for this question.

If d1=first distance=50 km (given in above example)

And d2=second distance=60 km (given in above example)

And X=first speed=40 km/hr ( “ )

And Y=second speed=30 km/hr

Then average speed={(d1+d2)XY} /{(d1Y+d2X)}

Putting the value of d1, d2,X and Y from the given example
in the above formula

We get

Average speed= {(50+60)40x30}/{(50x30)+(60x40)}

Average speed=(110x40x30)/(1500+2400)

=(110x40x30)/3900

=(110x12)/39

=33.8
km/hr answer.

So we put this formula directly into this type of question
and with a very little of calculation, we are able to get the answer quickly. This is the
shortest method for solving this type of questions as you just have to put the
formula according to the question’s terms and you get the answer quickly rather
than solving this question with our normal ways which takes a lot of time as
compared to above given method.

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