Aptitude - Profit and Loss - Discussion

Discussion Forum : Profit and Loss - General Questions (Q.No. 2)
2.
The cost price of 20 articles is the same as the selling price of x articles. If the profit is 25%, then the value of x is:
15
16
18
25
Answer: Option
Explanation:

Let C.P. of each article be Re. 1 C.P. of x articles = Rs. x.

S.P. of x articles = Rs. 20.

Profit = Rs. (20 - x).

20 - x x 100 = 25
x

2000 - 100x = 25x

125x = 2000

x = 16.

Video Explanation: https://youtu.be/sidqvjUoZxY

Discussion:
353 comments Page 11 of 36.

Sampath said:   1 decade ago
We have 20*C.P = X*S.P and we have profit of 25% which means (S.P-C.P)/C.P = 25/100 = 1/4.

= 4*S.P = 5*C.P => C.P = 4/5 S.P substitute it in first line 20*4/5 S.P = X*S.P =>16.

S.P = X*C.P => X = 16.

Ujwal said:   9 years ago
Total SP = sp of x item +sp of 20-x items=cp+sp of 20-x items.
Profit = total sp - total c p =cp + sp of 20-x items-cp = sp of 20-x items.
Profit % = profit * 100/cp.
i.e. 25=(20-x) * 100/x.
Therefore, x =16.

Shine said:   1 decade ago
Since the CP & SP are equal,

Profit%= ( (no.of items left over) / (no.of items sold) ) *100.

Let no.of items left over left over be X.

(X) / (20-X) = 0.25

On solving, no.of items sold= (20-X) =16.

Rushikesh said:   7 years ago
We can solve these problem by using another method.

Given 20 C.P.=x S.P --> eq1.
but the profit is 25%.

Therefore, SP=(125/100)*CP.
put above value of SP in eqn 1.
20*CP=x*(125/100)CP.
By solving x=16.

SNR said:   5 years ago
@All.

According to me, the solution is;

CP of 20 articles = SP of x articles.
Profit = 25%.
---> SP = 125% * CP = 1.25 * CP.
---> CP*20 = 1.25*CP*x.
---> 20 = 1.25*x.
---> x = 20/1.25 = 16.

Siva said:   5 months ago
Let the CP of 20 articles be 100.
If SP is 25% profit, then it would be 125.
If 20 articles are 100.
Then,
x article is 125.

Just simply multiply the values and equal it;
x * 125 = 20 * 100.
x = 16.
(25)

SHARANG RAINA said:   1 decade ago
Let cost of one article be Rs 1.

i.e 4 CP = Rs 1.

Now CP of 20 articles is equal to SP of x article.

SP*x = 20*1.

SP = 20/x.

We know,

SP = (1+ P/100)*CP.

20/x = (1+(25/100))*1.

x = RS.16 Answer.

Manish said:   1 decade ago
Given C.P of 20 articles = S.P of X articles,

If we consider C.P of 1 article is Rs.1 the S.P of X = 20. from this S.P of 1 articles will be 20/X.

So (20/X - 1)/1*100 =25 which give 16 as a Answer .

Prince said:   2 years ago
20 CP = x SP
CP/SP = x/20.
profit % =25 (given)
profit % = (SP-CP/CP) * 100 ---> FORMULA.

Putting the value in the formula.
(20 - x/ x) * 100 = 25.

Solve for x.
80 - 4x/x = 1,
80 = 5x,
x = 16 ans.
(42)

Reepen dhital said:   1 decade ago
Let C.P. of each article be Re. 1 C.P. of x articles = Rs. x.

S.P. of x articles = Rs. 20.

Profit = Rs. (20-x).

Then,

25% of x = 20-x.
25x/100 = 20-x.

25x = 2000-100x.
125x = 2000.

i.e x = 15.


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