Aptitude - Profit and Loss - Discussion

You should calculate % profit after the price is doubled and the profit tripled.

They have said that if SP is doubled Profit becomes 3 times.

Let CP = X, & SP = Y.

As per the condition 2Y = 3(Y-X) ----------- (1).

Therefore, SP-CP = Profit.

2Y-CP = 3(Y-X).

CP = 3X-Y.

Put this in formula.

[2Y-3(Y-X)/3X-Y]*100.

3X-Y.
----- *100.
3X-Y.

= 100%.

Let cost price = x and selling price = y.

Then, in question they saying that the selling price is double a and profit triple that means.

First condition here our selling price is y then according to question will be 2y.

Second condition and again they are saying that our profit is triple and our profit is x-y i.e. cp-sp = profit.

Then according to question here our profit = 3(y-x).

Then according to first condition we will get:

Profit = (2y-x) ----- (1).

And according to second condition will get:

Profit = 3(y-x) ----- (2).

By using equation (1) and equation (2) we will get:

(2y-x) = 3(y-x).

Or 3(y-x) = (2y-x).

After solving this equation we will get 100% profit.

Thanks friends and good luck. And according to second condition we will get.

In this problem clearly mentioned the selling price is doubled & profit is tripled.

Let C.P = 1 than S.P = 2.

Profit = (S.P)-(C.P).

=2-1 = 1.

Profit% = 1*100 = 100%.

How to put in fraction?

Some people are confused by this question because they are confused to calculate profit after doubling selling price or before doubling selling price. Many people had given about general logic. Now it tell in short cut manner by taking value.

Consider C.P = 100, S.P = 200 then double S.P = 400.

Earlier profit is 100 and after doubling we get 300 which is tripled of profit earlier.

Now they asked us to find profit % question is not clear about finding profit but options makes it clear about finding the answer i.e. if you see earlier profit % it is 100% but after doubling selling price it is 300%.

So by seeing options we can say that 100% is the correct answer since 300% is not given. This type of questions will be cleared by options.

C.P = 100.

S.P = 200.

P = S.P-C.P.

= 200-100.

P = 100.

P% = P/C.P.*100%.

= 100/100*100% = 100%.

If selling price doubled we can use only 2y?

Why all are used 2y-x?

Here 2y-x means profit i.e.: S.P - C.P.

2 S.P = 3 Profit.

2 S.P = 3 S.P - 3 C.P.

S.P = 3 C.P.

Assume C.P Rs. 1.

Profit = 2*100/1.

i.e 200.

Please tel me where I went wrong.