Quantitative Aptitude - Arithmetic Ability Questions

A rice trader buys 20 quintals of rice for Rs 8,580. However, 22% rice is lost in transportation. At what rate should he sell to earn 20% profit?

The sum of ages of Ram and his son is 48. If his uncle's age is also included the average becomes 40. What is the age of Ram's uncle?

In how many different ways can the letters of the word 'RITUAL' be arranged?

A number is increased by 84, it becomes 107% of itself. What is the number?

A man borrowed some money from a private organisation at 5% simple interest per annum. He lended this money to another person at 10% compound interest per annum, and made a profit of 26,410 in 4 years. The man borrowed

If the radius of a circle is increased by 14% its area increases by

cos3A is equal to

5 years ago the average age of a family which includes father, mother and a son was 35 years. 3 years ago the average age of father and mother was
46 years. What is the present age (in years) of the son?