A shopkeeper gave 10 discount on the MP of a article thus earning a profit of Rs 400 Had he sold the...........

Quantitative Aptitude(IBPS RRB PO) Profit and loss

A shopkeeper gave 10% discount on the MP of a article thus earning a profit of Rs. 400. Had he sold the article at 20% discount, he would have earned 330 as profit. What was the MP of article?

600

900

700

1100

800

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Explanation:

Let MP of article = 100x
1st case: 10% discount on the MP So, SP = 100x-10x = 90x
2nd case: 20% discount on the MP So, SP = 100x-20x = 80x
CP in both cases will be same.
So, 90x-400 = 80x - 330
or, x = 7
So, MP of article = 100x = 700