If a merchant offers a discount of 40% on the marked price of his goods and thus ends up selling at cost price, what was the % mark up? (Answer in Percent)

9⁶-11 when divided by 8 would leave a remainder of :

Five years ago the sum of the ages of A and B was 58 years. The difference between B's age 8 years ago and A's age 8 years hence is 16 years. The ratio of the present ages of A and B is:

By selling a bicycle for Rs. 2,850 a shopkeeper gain 14%. If the profit is reduced to 8 %, then the selling price will be 

Difference of two numbers is 1890. If 12.5% of one number is 17.5% of the other number, Find the two numbers.

The area of the base of a right circular cone is 400π and its height is 15 cm. The curved surface of the cone ( in cm²) is:

If 50% of (x −y) = 30% of (x + y), then what percent of x is y? 

What is the sum of two consecutive even numbers, the difference of whose square is 84?