Mr Shamin's salary increases every year by 10% in June. If there is no other increase or reduction in the salary and his salary in June 201 I was Rs 22,385. what was his salary in June 2009?

A shopkeeper labelled the price of his articles so as to earn a profit of 30% on the cost price, He then sold the articles by offering a discount of 10% on the labelled price. What is the actual percent profit earned in the deal? 

Profit earned by an organisation is distributed among officers and clerks in the ratio of 5:3. If the number of officers is 45 and the number of clerks is 80 and the amount received by each officer is Rs 25,000, what was the total amount of profit earned?

Out of five girls and three boys. four children are to be randomly selected for a quiz contest. What is the probability that all the selected children are girls?

 Amit and Sujit together can complete an assignment of data entry in five days. Sujit's speed is 80% of Amit's speed and the total key depressions in the assignment are 5,76,000. What is Amit's speed in key depressions per hour if they work for 8 hours a day?

Inside a square plot, a circular garden is developed which exactly fits in the square plot and the diameter of the garden is equal to the side of the square plot which is 28 metres. What is the area of the space left out in the square plot after developing the garden?