Question
Mathematics Question on Profit and Loss
A man sells an article at 5% profit. If he had bought it at 5% less and sold it for Re. 1 less, he would have gained 10%. The cost price of the article is
Rs. 200
Rs. 150
Rs. 250
Rs. 240
Rs. 200
Solution
The correct option is (A): 200
Explanation:Let the cost price of the article be x.
Given that he sells the article at a 5% profit, the selling price (SP) can be expressed as:
SP=x+0.05x=1.05x
If he had bought it at 5% less, the new cost price would be:
New Cost Price=x−0.05x=0.95x
He sells it for Re. 1 less, so the new selling price is:
New SP=1.05x−1
According to the problem, this new selling price gives him a 10% profit on the new cost price:
New SP=0.95x+0.10(0.95x)=0.95x+0.095x=1.045x
Setting the two expressions for the new selling price equal to each other:
1.05x−1=1.045x
Now, solving for x:
1.05x−1.045x=1
0.005x=1
x=0.0051=200
Thus, the cost price of the article is Option A: Rs. 200.