4/5 of a number is 10 more than two-thirds of the same number. What is that number?

What is the value of x $$ {0.081\over x}={0.09\over10}$$ ?

The area of a triangle is 24 square cm. If one side of it is 4 cm, what will be the height of the triangle?

If a side of a square is a, then what will be the area of the square on its diagonal?

What is the value of a when $$ {x^{2(3a+1)}}={x^{3}}$$ ?

A principal increase by 50 percent in five years at the rate of simple interest. What will be the compound interest for 3 years at Rs 20,000 with the same interest rate?

If the height of a perpendicular cylinder is 10 cm and its curved surface area is 440 square cm, what is its radius?

A number is divided into three parts such that three times of the first part, six times of the second part and eight times the third part are equals to each other. If the first part is Rs. 1600, what is the third part?