Aptitude - Profit and Loss - Discussion
Discussion Forum : Profit and Loss - General Questions (Q.No. 4)
4.
In a certain store, the profit is 320% of the cost. If the cost increases by 25% but the selling price remains constant, approximately what percentage of the selling price is the profit?
Answer: Option
Explanation:
Let C.P.= Rs. 100. Then, Profit = Rs. 320, S.P. = Rs. 420.
New C.P. = 125% of Rs. 100 = Rs. 125
New S.P. = Rs. 420.
Profit = Rs. (420 - 125) = Rs. 295.
 Required percentage = |
 |
295 | x 100 |  % |
= | 1475 | % = 70% (approximately). |
| 420 | 21 |
Video Explanation: https://youtu.be/bQA8SB8ycbw
Discussion:
147 comments Page 14 of 15.
Swimmi said:
1 decade ago
Why sp 420 is calculated when it is given that sp will remain constant?
Sinu said:
1 decade ago
Thanks malini.
Khaleel said:
1 decade ago
Hi nitesh if we take cp=100 your principle not works.
Dinesh said:
1 decade ago
Good explanation malini.
Habib said:
1 decade ago
Maths & Physics are completely based on assumption based foundations....even in this example no data about CP is given...so we have no choice just assume a simplified value (eg 100 or 1) and base your calculations upon that !!!!
Archana said:
1 decade ago
I had not understood the explanination. Can you please explain me it again. How can we assume cp to be 100?
Malini said:
1 decade ago
Let me explain you clearly:
In most of the problems assume cp as 100 then only it will be easy.
now let us assume cp=100
profit is given 320%
we know p=sp-cp
then sp=p+cp
so sp=420
Then it is given cp is incresed by 25%
so cp=alredy assumed as 100+now increased by 25%
cp=125
sp is always constant(given in question)
so now sp=420
cp=125
p=sp-cp
=420-125
=295
p%=p/cp*100
But here it is specifically asked for sp(read the question)
so p%=p/sp*100
=295/420*100
=70%
In most of the problems assume cp as 100 then only it will be easy.
now let us assume cp=100
profit is given 320%
we know p=sp-cp
then sp=p+cp
so sp=420
Then it is given cp is incresed by 25%
so cp=alredy assumed as 100+now increased by 25%
cp=125
sp is always constant(given in question)
so now sp=420
cp=125
p=sp-cp
=420-125
=295
p%=p/cp*100
But here it is specifically asked for sp(read the question)
so p%=p/sp*100
=295/420*100
=70%
Deepak said:
1 decade ago
I cant understand method of this question please explain in simple format.
Mahboob alam said:
1 decade ago
How can we assume the value of C.P. is 100. If the value of C.P. is not given ?
Can we take the value of CP is x?
Can we take the value of CP is x?
Vivek said:
1 decade ago
You can assume 100 or x becoz for simplicity.
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