Quantitative Aptitude - Arithmetic Ability Questions

If the ratio of cost price and selling price be 10:11, then the profit percentage is

The ratio of present ages of Ramita and Satyajit is 9:7. After 9 years the ratio of their ages will be 5:4. What is Ramita's present age?

What is the area (in sq cm) of a rhombus if the lengths of its diagonals are 25 cm and 20 cm?

If the sum of the measures of all the interior angles of polygon is 2340°. What is the number of sides of the polygon?

ax + 3y = 6 has slope -2/3. What is the value of a?

In ΔUVW measure of angle V is 90 deg. If cosecU = 13/12, and UV = 2.5cm, then what is the length (in cm) of side VW?

In ΔXYZ measure of angle Y is 90 deg. If cot X = 5/12, and XY = 2.5 cm, then what is the length (in cm) of side XZ?

HCF of two numbers is 19 and their LCM is 665. If one of the number is 95, find the other.