A sum amounts to ₹ 6480 in 4 years and ₹ 9600 in 8 years when it is compounded annually. Find the sum?

The income of A is 25% more than that of B and the income of C is 65% less than the sum of the incomes of A and B. Income of C is what percent less than the income of A?

Direction: The following graph shows the number of boys and girls in Class V, Class VI, Class VII and Class VIII. Study the graph and answer the question.

Which class has the maximum number of students?

Direction: Study the following information to answer the questions.

On Wednesday, in hotel A, 30% of male customers and 70% of female customers were from Town X. what was the number of customers in hotel A from town X on Wednesday?

Divide 32 into two parts such that the sum of the square of the parts is 674 what is the value of the parts? 

Direction: what should come in place at question mark(?).

$$ {1\over 8}×(223+?)=71$$

The average weight of 15 oarsmen in a boat is increased by 1.6 kg when one of the crews, whose weighs 42 kg is replaced by a new man. Find the weight of the new man (in kg). 

If $${x}^2+{y}^2x+1=0$$ then the value of $$x^{31}+y{35}$$ is