If 20% of (A+B) = 50% of B, then Value of $${2A-B}\over {2A+B}$$ is 

Out of an earning of Rs.720, Pankaj spends 65%. How much does he save?

Kamal saves x% of her monthly income. When her monthly expenditure is increased by 20% and the monthly income is increased by 26%, then her monthly savings increased by 60%. What is the value of x?

A certain number of students from school X appeared in an examination and 30% students failed. 150% more students than those from school X, appeared in the same examination from school Y. If 80% of the total number of students who appeared from X and Y passed, then what is the percentage of students who failed from Y?

There is a loss of 25% on selling an article for Rs 300, then what is the cost price of the article?

Mr. Ankur invests 14% of his monthly income every month i.e. Rs.1,750 in shares, 8% in Insurance policies and 7% in fixed deposits. What is the total annual amount invested by him?

The number of girls in a class is 20% more than the number of boys. There are total 66 students in this class. If 4 more girls are admitted in the class, then the ratio of the number of boys and girls will be?

0.15% of $$33{1\over 3}\%$$ of ₹ 10000 is :