Aptitude - Profit and Loss - Discussion

Gain% = (Gain * 100) / CP.
Where Gain = SP - CP.

Here CP = 4700 the price he bought the item but in the question, it is said that he spends 800 More on repair, therefore total amount he spends is CP + repairing cost = 4700 + 800 = 5500.

Therefore CP becomes 5500 (Amount he spent for purchasing as well as for repairing)
SP = 5800 (Given).
Gain = SP - CP.
=> 5800 - 5500 = 300.
Gain% = (Gain * 100) / CP.
=> (300 * 100) / 5500,
=> 300 / 55,
=> 5.454545%.

The correct answer is 5.45%.

Gain formula is (s.p) > (c.p).

Then apply the formula.

Gain = (300/5500 x 100).
Ans = (5 x 5/11)% gain.

Thank you all for explanation and simplification.

Nice method, Thanks @Munna.

Please, Could anyone tell me any shortcut way of solving this type of problems?

Please tell me the shortcut to solve this.

@Sudhakar.

The selling price is Rs 115.
Cost price is Rs 100.
Actually, profit is 15.
Then, % of profit is 15.

Here we use 800 rupees for the repairing so it becomes a loss for the buyer the how come adding with cost price? I can't understand.

My buying cost price Rs. 100/-, my selling price Rs. 115/- so now I want to know the % of on sales price. Can you find the solution?

Let's forget about formula.
Its given, total cost price(original cost + repair) = 5500.
selling price = 5800.
Difference = 300.
Thus, we need to find how much 300 be of 5800.

Let, 10% of 5800 = 580. So options C& D are eliminated since 300 is less than and not equal to 580.

Coming to option A, 1% of 5800 = 58(50 + 8).

Thus 4(58) = 236.
So the ultimate option be B.