Average of ten positive numbers  is x. If each number is increased by 12%  then x is increased by

Prashant's monthly income is 30% more than that of Vimal. Vimal's monthly income is 20% less than that of Abhishek. If half of the value of the difference between the monthly income of Prashant and Abhishek is Rs.1800, what is the monthly income of Vimal? 

A house worth Rs.1,50,000 is sold by X at a 5% profit to Y, Y sells the house back to X at a 2% loss. Then find profit and loss in the entire transaction. 

The strength of a school increases and decreases in every alternate year by 10 %. It started with increase in 2000, then the strength of the school in 2003 as compared to that in 2000 was : 

A man loses 20% of his money. After spending 25% of the remainder, he has Rs.480 left with him. How much money did he originally have?

Sumit got 186 marks in Science, 158 marks in Hindi and 78 marks in Maths. The maximum marks in Science is 220, 180 in Hindi and 130 in Maths. What is his approximate total percentage marks?

In a college Anjana scored 80 marks out of 150 in History and 95 marks out of 120 in English. If she wants to score 70% marks in 3 subjects, find the minimum marks she should score in Geography out of 100.

If the income of Ram is $$ 12{1\over2}\%$$ more than that of Shyam, the income of Shyam is less than that of Ram by