Aptitude - Profit and Loss - Discussion

Discussion Forum : Profit and Loss - Data Sufficiency 3 (Q.No. 1)
Directions to Solve

Each of the questions given below consists of a question followed by three statements. You have to study the question and the statements and decide which of the statement(s) is/are necessary to answer the question.


1.

By selling an article what is the profit percent gained?

I. 

5% discount is given on list price.

II. 

If discount is not given, 20% profit is gained.

 III. 

The cost price of the articles is Rs. 5000.

Only I and II
Only II and III
Only I and III
All I, II and III
None of these
Answer: Option
Explanation:

 I. Let the list price be Rs. x.

Then, S.P. = 95% of Rs. x = Rs. x x 95 = Rs. 19x
100 20

II. When S.P. = Rs. x and gain = 20%.

Then, C.P. = Rs. 100 x x = Rs. 5x
120 6

Gain = 19x - 5x = 57x - 50x = 7x
20 6 60 60

Gain % = 7x x 6 x 100 % = 14%.
60 5x

Thus, I and II only give the answer.

Correct answer is (A).

Discussion:
27 comments Page 3 of 3.

Trouble said:   1 decade ago
But why not third statement is true like.

cp = (100/100*gain%)*sp from third statement.

Where we know,

sp = 120% of cp from statement 2nd.

So we can say,

cp = (100/100+gain%)*120% of cp which 100 + gain% = 120.

Gain% = 20.

Sudarshan yadav said:   1 decade ago
After giving 5% discount on list price,
sp=x-5*x/100=19x/20.

In 2nd case no discount is given that means marked price = sp.
So sp = x.

Again to gain 20% cp should be,
cp = 100*x/(100+20) = 0.833x.

Now to find profit take sp of when this is given so,

Profit = (sp-cp)*100/cp = (0.95-0.833) *100/0.833 = 14%.

So statement 1 and 2 are only needed to answer.

Iamateur said:   1 decade ago
What is the meaning of list price in the question?

Kaustubh said:   1 decade ago
How to get the equation?

Mani Soni said:   1 decade ago
@Prasu :-

Cost Price = [ (100)/(100+gain%)]* Selling price

= [100/120]x

Raj said:   1 decade ago
In given explanation,

I-> x is list price
II-> x is selling price

So how did you equte them?

Prasu said:   1 decade ago
How do you get the cost price?


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