If  $$n+{2\over 3}n+{1\over2}n+{1\over7}n=97$$ then the value of n is : 

The LCM of two numbers is 48. If those numbers are in the ratio 2 : 3 then what will be their sum?

Directions : Study the following graph and answer the questions.  

In 2005, the exports of company X were double that of company Y in that year. If the imports of company X during the year were 180 crores, what was the amount (in crore) of imports of company Y during the year? 

A person could save 20% of his income. A year later, his income increased by 25% but he could save the same amount only as before. By what percentage has his expenditure increased?

If $$x+{16\over x}=8$$, then the value of $$x^2+{32\over x^2}$$ is:

What is the volume of the largest sphere that can be carved out of a wooden cube of side 21 cm?$$( π{22\over 7})$$

Answer the following questions

In an exam of 100 marks, the average marks of a class of 40 students are 76. If the top 3 scorers of the class leave, the average score falls “down by 1. If the other two toppers except “the highest topper scored not more than 85. “then what is the minimum score the topper can score?

Punit goes from his home to his relative's place at a speed of 45 km/h. While returning from the relative's place, due to traffic, it takes him an hour longer as he can only drive at the speed of 40 km/h. Find the distance (in km) of his relative's place from his home.