On a certain Principal if the Simple interest for two years is Rs 4800 and Compound interest for the two years is Rs 5088, what is the rate of Interest?

If 15% of 40 is 2 more than 25% of a number, then the number will be

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

If 35% of A’s income is equal to 25% of B’s income, then the ratio of A’s income to B’s income is

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?

A dishonest dealer sells the goods at 7% loss on cost price but uses 18% less weight. What is his percentage of profit? (Correct to 2 decimal places)

In an election between two candidates, a candidate got 55% of the total valid votes, if the total votes were 15200 and 15% of the votes were declared invalid, then how many valid votes did the other candidate get?

If the price of petrol is reduced by 10%, by how much should a consumer increase the consumption of petrol so that his expenditure on petrol does not decrease?