The ratio between the boys and girls in a class is 6:5 respectively. If 8 more boys join the class and two girls leave the class then the respective ratio become 11:7. What is the number of boys in the class now?

Direction: Study the double bar graph given below and answer the questions.

The class having maximum number of participants in exhibitions:

Two students appeared for an examination. One of them secured 20 marks more than the other and his marks were 55% of the sum of their marks. The marks obtained by them are : 

Directions-Study the following diagram and answer the four questions.

The percentage of students securing marks less than 50 is

$$ \sqrt{217+\sqrt{48+\sqrt{256}}}=?$$

If a sum of money becomes 8 times in 9 years at compound interest annually, in how much time it will become 32 times?

A, B, C and D purchase a gift worth Rs. 60. A pays $${1\over2} $$ of what others are paying. B pays $${1\over 3} $$ of  what others are paying and C  pays $${1\over 4} $$ of what others are  paying. What is the amount paid by D?

If a vendor sells apples at Rs 170 per kg he suffers 15 % loss. If he sells at Rs 230 per kg, then what is his profit percentage?