A shopkeeper wants to make a profit of 20% on an article after selling it, while he gives a cash discount of 20%. Further allows 4 more articles for free after purchase of one dozen articles to his premium customer. How much per cent above the cost price he must mark his article?

In ΔPQR, PQ=QR and O is an interior point of ΔPQR such that ∠OPR=∠ORP.

Consider the following statements:

(i) ΔPOR is an isosceles triangle.

(ii) O is the centroid of ΔPQR.

(iii) ΔPQO is congruent to ΔRQO.

Which of the above statements are correct?

When a mobile is sold at 6 percent profit, it gets Rs. 870 more than it is sold at 6 percent loss. So what is the purchase price of mobile?

If the area of a circle is 9π sq.cm then it circumference is

Study the given pie chart and answer the question that follows.
Distribution (Degree wise) of students studying in schools A, B, C, D and E
Total Number of students =9000

The total number of students in schools D and E is what percentage more than the total number of students in school B and C?

Radhe buys two TVs at the same cost price, one of them is sold at $$11 {1\over 9}\% $$ profit and the other at   $$14{2\over 7}\% $$ profit, then the difference between their selling price is Rs $${200\over 7}$$. Find the cost price of the TV.

Two pipes, A and B, can fill a tank in X minutes and 6 minutes, respectively. If both the pipes are used together, then they take 1.5 minute to fill the tank. Find the value of X.

If the income of A is 25% more than that of B, then by what percent is the income of B less than that of A?