[pagalneha]

Percentage Table
 
 
        SUBTRACTED        ADDED
4        4.16(1/24)            3.86(1/26)
5        5.26(1/19)             4.76(1/21)
10      11.11(1/9)            9.09(1/11)
12.5    14.28(1/7)           11.11(1/9)
15        17.55                 13
20        25                       16.67(1/6)
25        33.33                  20(1/5)
30        42.8                    23
40        66.67(2/3)           28
50        100                      33.33(1/3)
60        150                      37.5(3/8)
 
when subtracted then add this%        when added the subtarct this%

-This table is used in questions related to topics like Profit and loss,
time speed and distance, C.I.,S.I, etc. and also in D.I.

-This reduces ur calculation to the minimum level( but u shud know the
reciprocals till 30 for that coz it will help a lot)

-Example – If the price of sugar increases then by how much % should one
reduce his consumption to avoid extra expenditure.
When price of sugar is increased by 50% the consumption will reduce by
33.33%and like wise.
This will b most useful in TSD questions.

{If anyone knows abt. This % table in any book plz. Let me know the name of
the book.}

As my personal advice I wud suggest all ppl seriously wanting to appear for
cat shud learn the reciprocals, squares and cubes till 30 and roots also. I
have felt that this makes calculations much faster. When I was preparing for
cat we were told to keep on thinking in numbers until we were comfortable
with there use all of us.

One most important thing in all MBA exams we have 4 or 5 options with us so
we need not calculate exact ans. With the use of above mentioned techniques
we can get the approximate correct ans. and save time, but if all the ans.
choices r very close then we have to calculate, but this is very rare if we
get close ans. and for XLRI when I feel that if u know the reciprocals that
helps u a lot in the quant sec.( this is what I personally believe)and for
CAT u need to practice all types of questions and if u get a new type of
question plz. Do not try to attempt it coz u might loose some precious time
in getting the techniques. .( I might sound repetitive but I thought that it
might b useful for all of us.)

[Silken_Touch]

hey neha, Thanks for such a valuable compilation. But I believe your indentation has been screwed by the tabs that you used.
in fact, I believe its the bug in the forum, and not your fault. (my exp with another fudforum)
Anyways, I just hope everyone understands and utilizes such important information.

[pagalneha]

That is why i have put it there, hope all u guys take full advantage of it, coz as far as i know nobody has it except for the students in Kanpur.

[pagalneha]

COIN CONCEPT

When 2 quantities are sold as a group together .
Here r some more fundas, with examples.


Example- A horse and a carriage were bought for Rs. 12000. the carriage was sold at a loss of 10% , horse was sold at a profit of 20%. Together I received Rs.13500. what is the C.P. and S.P. of each.

Method-Assume everything to be a horse, so I shud have sold everything at 20% profit.20% of 12000+12000= 14400.But I received Rs. 13500 only that makes a difference of 900 or Rs. 900 are less. This also makes a difference of 30% coz we calculated 40% profit (20+20%), but we had [+20%+(-10%)]=10%
I calculated 30% more on carriage.
30% or carriage=900
therefore 100%=3000
so now we have the individual cost of the horse, the carriage is for 9000/-and the S.P. can b calculated now.

We have similar questions in many forms which can b done by applying the above concept.

[MavericK]

hey Neha!!
how abt posting all the *fundas* u've got on this thread...and we can rename it as "Neha's Section" just like the famous "Gaurav's Section"

[Sandeep Achar]

I second that!!

Sandy A.

[pagalneha]

ok i don't mind that at all will keep on adding all i have regularly. u can rename it. its good for me.

[pagalneha]

Sample Question. 5 kg of rice and 2 kg of tea cost Rs/- 35, prices of rice grew by 10% and tea by 35% and together I could purchase it for Rs.420. What is the price of tea.
(in these type of questions, whatever is asked take reverse of that, here tea is asked so work on rice.)

Method
350+10% of 350=385
420-385=35
There is a difference of 25%(35%-10%)
This is Rs. 35
25% corresponds to Rs. 35
therefore 100%=140
2 Kg=Rs 140. so 1kg =70

[pagalneha]

Example.- I hired a servant for Rs. 300 per month and a cycle if he works for a year. After 8 months I threw him out and paid him Rs. 50 for that month and the cycle. How much does the cycle cost?

Method- In 8 months the servant has earned 2/3rd (8/12) of the cycle. So he is left with just 1/3rd of the cycle, which we will cut in place of 300 we gave him only 50.
1/3 corresponds to (300-50)=250
therefore 1=750. so the cost of the cycle is Rs. 750.

[shub001]

I did not get this question :(