Aptitude - Profit and Loss - Discussion
Discussion Forum : Profit and Loss - General Questions (Q.No. 3)
3.
If selling price is doubled, the profit triples. Find the profit percent.
Answer: Option
Explanation:
Let C.P. be Rs. x and S.P. be Rs. y.
Then, 3(y - x) = (2y - x) 
y = 2x.
Profit = Rs. (y - x) = Rs. (2x - x) = Rs. x.
 Profit % = |
 |
x | x 100 |  % = 100% |
| x |
Video Explanation: https://youtu.be/dPzF10mGsWE
Discussion:
304 comments Page 16 of 31.
Akhil pillai said:
9 years ago
If the cp was 50 and so was 100 for the first condition.
In the second case if the sp is doubled i.e 200 profit becomes three times i.e 150 so it comes 300%.
Can someone tell me where am I going wrong?
In the second case if the sp is doubled i.e 200 profit becomes three times i.e 150 so it comes 300%.
Can someone tell me where am I going wrong?
Rahul said:
9 years ago
Apply,
SP = (100 + gain%) * cp/100.
SP = (100 + gain%) * cp/100.
Gopi Krishnan said:
9 years ago
Thanks for good explanation. Now I got it.
Mangai said:
9 years ago
@Tushar Vaibhav.
You explained clearly and It is easy when to compare to others.
You explained clearly and It is easy when to compare to others.
Anurag srivastava said:
9 years ago
Let C. P is x answer S. P is y and initial profit is 10.
We know that S. P - C. P = Profit.
y - x = 10-> Eq 1.
According to given condition, if S. P Double profit become thrice of initial profit then, new S. P. Is 2y and profit is 30 and cost price is same as above x.
Now, 2y - x = 30 -> Eq 2.
By solving these two equation, we get x = 10 and y = 20.
So profit % = (y - x) /x= (20 - 10) /10 =100% this is a basic approach.
We know that S. P - C. P = Profit.
y - x = 10-> Eq 1.
According to given condition, if S. P Double profit become thrice of initial profit then, new S. P. Is 2y and profit is 30 and cost price is same as above x.
Now, 2y - x = 30 -> Eq 2.
By solving these two equation, we get x = 10 and y = 20.
So profit % = (y - x) /x= (20 - 10) /10 =100% this is a basic approach.
Saranyakumar said:
9 years ago
Thank you for the clear explanation @Balaji.
Garv said:
9 years ago
When you are doubling the selling price then why the cost is not increased in proportion to the same. How can you keep it fixed? Kindly explain.
And the equation be 2y - 2x instead to 2y - x.
And the equation be 2y - 2x instead to 2y - x.
Arun vihari said:
9 years ago
3(y - x) = 2y - x.
Above, 2y is ok, but why (-x)?
Above, 2y is ok, but why (-x)?
Nagendrababu said:
9 years ago
cp = x sp= y profit = sp - cp so profit=y - x -->(1)
sp = 2times and profit= thrice from given data.
So that sp = 2y and (profit) is 3(y-x) from (1) so that,
3(y - x) = 2y - x.
sp = 2times and profit= thrice from given data.
So that sp = 2y and (profit) is 3(y-x) from (1) so that,
3(y - x) = 2y - x.
Piyush soni said:
9 years ago
Let cp =10 and sp=20.
Know sp doubles = 40.
And profit triples = 3p.
We know that p = sp - cp.
According to question.
3p = sp - cp.
3(40 - 10) = 40 - 30.
30 = 30.
Know sp doubles = 40.
And profit triples = 3p.
We know that p = sp - cp.
According to question.
3p = sp - cp.
3(40 - 10) = 40 - 30.
30 = 30.
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