QUANT-2013. A topic A time

MBA CAT 2023
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Hello puys.As discussed we have decided to start a group where in we will prepare QUANT, dealing one topic at a time, till all the concepts are covered in that chapter. Please see this is strictly for questions dealing with ongoing top…

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Hello puys.

As discussed we have decided to start a group where in we will prepare QUANT, dealing one topic at a time, till all the concepts are covered in that chapter.

Please see this is strictly for questions dealing with ongoing topics. For rest general querry there is:
http://www.pagalguy.com/forums/quantitative-ability-and-di/official-quant-thread-c-t-88456/

Have a great time in this thread.
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topic list:


simple equations
ratio proportion and variation
% - profit and loss parternership
numbers system
geomatry and mensuration
time and distance
time and work
average and mixtures
SI and CI
indices and surds
logarithms
quadratic equation
inequalities and modulus
special equations
progressions
permutation and combination
probability
statistics
trignometry
coordinate geometry
functions and graphs
operator based questions

AT the start a topic will be highlighted until that topic gets completed or officially over..
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@bs0409 @vijay_chandola @vbhvgupta @saurav205 @chandrakant.k @raopradeep @pyashraj @Subhashdec2 @amresh_maverick @ishu1991

pls tag those jinko miss kar diya ho meine....
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@DeAdLy thanks for starting this thread..

one request to all the puys...keep the thread as clean as possible...because the questions will be posted in the morning and then the discussion starts at night...if we spam here it will be very difficult plus time consuming to go through all the pages to look for the relevant post...
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@saurav205 said:
@DeAdLy thanks for starting this thread..one request to all the puys...keep the thread as clean as possible...because the questions will be posted in the morning and then the discussion starts at night...if we spam here it will be very difficult plus time consuming to go through all the pages to look for the relevant post...
for this I suggest we mark our posts on the top...if we are posting a question we post like this

QUESTION

q) xxxxxxx

and if we are posting a solution/approach......

APPROACH
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one more thing people...lets decide upon the days..the assigned day and the person to which it is assigned will be known before hand so that before you leave for office or college you post the questions and then leave....else there will be a confusion...


Plus this will keep everyone alert and also updated...and everyone will get a chance to have there questions posted and the burden will not be on a few...

what say??
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@saurav205 said:
one more thing people...lets decide upon the days..the assigned day and the person to which it is assigned will be known before hand so that before you leave for office or college you post the questions and then leave....else there will be a confusion...Plus this will keep everyone alert and also updated...and everyone will get a chance to have there questions posted and the burden will not be on a few...what say??
Thanks for the input but its too early to decide who will take what topics & when..lets keep on coming with more ideas..
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Lets start with first topic:

PERCENTAGE, PROFIT LOSS & PARTNERSHIPS

Open till coming Sunday
happy solving

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Q1:


B's salary is 25% more than A's salary. By what percentage is A's salary less than B's salary?

a. 15%
b. 10%
c. 20%
d. 25%
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@DeAdLy said:
Q1:B's salary is 25% more than A's salary. By what percentage is A's salary less than B's salary?a. 15%b. 10%c. 20%d. 25%
A=100
B=125
(b-a)/b = 25/125 = 20%
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@DeAdLy said:
Q1:B's salary is 25% more than A's salary. By what percentage is A's salary less than B's salary?a. 15%b. 10%c. 20%d. 25%
20%..

a=100
b=125
a less than b = (b-a)/b *100 = 125-100/125 = 20%
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Q2:

The cost of manufacture of an article is made up of 4 components A,B,C,D which have ratio of 3:4:5:6 respectively. If there are respective changes in the cost of +10%,-20%,-30% & +40%, then what would be percentage change in the cost?

a. 10%
b. 15%
c. 7%
d. 2.22%
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@DeAdLy said:
The cost of manufacture of an article is made up of 4 components A,B,C,D which have ratio of 3:4:5:6 respectively. If there are respective changes in the cost of +10%,-20%,-30% & +40%, then what would be percentage change in the cost?a. 10%b. 15%c. 7% d. 2.22%
initial cost = 300+400+500+600 = 1800....
final cost = 330+320+350+840 = 1840
%change = 40/1800 = 2.22%

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@DeAdLy said:
The cost of manufacture of an article is made up of 4 components A,B,C,D which have ratio of 3:4:5:6 respectively. If there are respective changes in the cost of +10%,-20%,-30% & +40%, then what would be percentage change in the cost?a. 10%b. 15%c. 7% d. 2.22%

APPROACH


initial cost = 30+40+50+60=180
final cost= 33+32+35+84=184

%change=4/180=2.22%
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@DeAdLy said:
Q1:B's salary is 25% more than A's salary. By what percentage is A's salary less than B's salary?a. 15%b. 10%c. 20%d. 25%
Rule: If there is increase of 1/x in one parameter then a corresponding decrease of 1/x+1 is in other parameter.
25% increase=1/4
Decrease =1/5=20%
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Q 1

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Q 2

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Q 3

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Q 4