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:
309 comments Page 6 of 31.
Vinod said:
2 decades ago
= S.P - C.P = PROFIT/100%
= 2X- 3X =1X/100%
= X = 1/100
=100%.
= 2X- 3X =1X/100%
= X = 1/100
=100%.
Divyesh said:
2 decades ago
Let s.p. = y and c.p. = x
now current profit is (y-x)
and the profit when the s.p. is doubled is (2y-x)
now according to the equation
(2y-x)/3 = (y-x) bcaz new profit is thrice a current profit
solving equation we get y=2x
when s.p. is doubled as c.p.
so profit = (y-x)/x * 100 = (2x-x)/x * 100 = 100%
now current profit is (y-x)
and the profit when the s.p. is doubled is (2y-x)
now according to the equation
(2y-x)/3 = (y-x) bcaz new profit is thrice a current profit
solving equation we get y=2x
when s.p. is doubled as c.p.
so profit = (y-x)/x * 100 = (2x-x)/x * 100 = 100%
Dinesh said:
2 decades ago
If we assume current SP to be Rs.100/- and then profit as x. Then,
SP Profit
100 x
200 3x
Therefore, 300x+200x=600x
Therefore, x=100. I guess this is an easier approach.
SP Profit
100 x
200 3x
Therefore, 300x+200x=600x
Therefore, x=100. I guess this is an easier approach.
Rajendra said:
2 decades ago
Let SP= 10 Rs.
If it is doubled den SP =20rs,
So profit will be 10 Rs nothing but 100% profit.
If it is doubled den SP =20rs,
So profit will be 10 Rs nothing but 100% profit.
Satish said:
2 decades ago
profit per= ((s.p-c.p)/c.p)*100
c.p=x
s.p=2x
profit per = ((2x-x)/x)*100
=100
simple
c.p=x
s.p=2x
profit per = ((2x-x)/x)*100
=100
simple
DaniA said:
2 decades ago
3(y - x) = (2y - x) In this eqn how you subtract x from 2y?
I can not undestand pls explain.
I can not undestand pls explain.
Aakash kathunia said:
2 decades ago
I am also not able to understand how you substract x from 2y.. please explain... plz
PRASAD said:
2 decades ago
Balaji explained well thank you very much.
Kiran said:
2 decades ago
Still I m unable to understand this problem please help me out.
M.V.KRISHNA said:
2 decades ago
3(y - x)=(2y - x)
This step is not clear for me.
Alternate method:
S.P = C.P + PROFIT.............(1)
2*S.P = C.P + 3*PROFIT...........(2)
eq(2) - eq(1)
S.P = 2* PROFIT
SUBST S.P IN (1), WE GET
2* PROFIT = C.P + PROFIT
therefore, PROFIT = C.P
PROFIT % = (PROFIT / C.P) * 100
FINALLY, PROFIT % = 100%
This step is not clear for me.
Alternate method:
S.P = C.P + PROFIT.............(1)
2*S.P = C.P + 3*PROFIT...........(2)
eq(2) - eq(1)
S.P = 2* PROFIT
SUBST S.P IN (1), WE GET
2* PROFIT = C.P + PROFIT
therefore, PROFIT = C.P
PROFIT % = (PROFIT / C.P) * 100
FINALLY, PROFIT % = 100%
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