Aptitude - Profit and Loss - Discussion

Discussion Forum : Profit and Loss - General Questions (Q.No. 11)
11.
On selling 17 balls at Rs. 720, there is a loss equal to the cost price of 5 balls. The cost price of a ball is:
Rs. 45
Rs. 50
Rs. 55
Rs. 60
Answer: Option
Explanation:

(C.P. of 17 balls) - (S.P. of 17 balls) = (C.P. of 5 balls)

C.P. of 12 balls = S.P. of 17 balls = Rs.720.

C.P. of 1 ball = Rs. 720 = Rs. 60.
12

Discussion:
91 comments Page 5 of 10.

Govinda said:   6 years ago
loss% = cp - sp/cp.

15/100= (x-18700)/x.
15x = 100x-1870000.
x(cp)=22000.

Again have to gain profit 15%.
sp=22000*115%.
====> 25300.

Pranati said:   6 years ago
Thanks @Manasa.

Rohan kumbhar said:   6 years ago
Cp * profit = sp.
Suppose , cp of 17 ball = X.
From condition:
X * (X÷5)=720.
X= 60.

Nagarjuna said:   6 years ago
By verifying the options 1 ball.

17 balls -5 balls =720.

Dofari said:   5 years ago
(C.P. of 17 balls) - (S.P. of 17 balls) = (C.P. of 5 balls)
C.P. of 12 balls = S.P. of 17 balls = Rs.720.
C.P. of 1 ball = Rs. 720/12 = Rs. 60.

Eswar said:   5 years ago
Yes, you are right @Potter.

Sowmiya said:   4 years ago
Thanks @Manasa!

Srikanth said:   1 decade ago
I agree with manasa

Atul1487 said:   1 decade ago
@Murali.

You are incorrect.
As acc to you.

Given in the problem.
5x/17 = x-720/17.

But actual is.
5x/17 = x/17-720/17.

Now you will get incorrect answer.

Krunal said:   1 decade ago
SP = CP*(loss)or(gain)%.
SP = 720;
CP = x;

loss = 5 of CP = 5 (x);
720 = x*5x;
5x*x = 720;
x^2 = 144;
x = 12;

720/12 = 60.


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