Quantitative Aptitude - Arithmetic Ability Questions

The difference between 44% of a number and 33% of the same number is 286. What is the 54% of that number?

A trader had 22 quintals of wheat. He sold a part of it at 23% profit and the rest at 33% profit, so that he made a total profit of 27%. How much wheat did he sell at 33% profit?

P and Q can do a project in 6 and 12 days respectively. In how many days can they complete 25% of the project if they work together?

What is the average of first 39 even numbers ?

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

A trader buys 500 kgs of cotton for Rs 9,000. 10% of this cotton is spoiled due to rain. At what rate (Rs/Kg) should he sell the rest to earn 10% profit?

The ratio of ages of father and son is 7:2. Five years ago the product of their ages was 150. What is the age of the father?

A rice trader buys 16 quintals of rice for Rs 5632. 20% rice is lost in transportation. At what rate should he sell to earn 25% profit?