If a seller bought an item for Rs. 900 and determined the mark price in such a way that after giving 10 percent discount, he would get a profit of 20 percent, what would be the mark price?

If $$ {(x-5)^{2} +{(y-2)^{2}}+{(z-9)^{2}=0}}$$ then what is the value of (x+y-z)?

If each side of a cube is increased by 10%. Then find the percent change in the volume of the cube.

The marked price of an article is Rs 200. A profit of 25% is also earned by giving a discount of $$60{1\over2}\%$$ on the marked price. What is the cost price of that article?

If $$ {x^2} -4x-1 $$ then the value of $$ {{x^6} -{x^4}+{x^2}-1}\over {x^3}$$ will be

A and B together can do a piece of work in 12 days, A and C together can do the same work in 15 days. If B and C together can do the same work in 20 days, then in how many days A, B and C together can complete the same work?

If the purchase price of an article is equal to 80 percent of its selling price then there will be profit.

By selling an article for ₹72, there is a loss of 10%. At what price it should be sell to gain 10% profit?