If the fractions $$ {9\over11}$$, $$ {7\over9}$$, $$ {5\over6}$$ and $$ {11\over13}$$ are arranged in ascending order, which one will be the fourth?

A can do a piece of work in 20 days and B in 30 days. They work together for 7 days and then both leave the work.  Then C alone finishes the remaining work in 10 days. In how many days will C finish the full work?

The length, breadth and height of a room are in the ratio 3 : 2 : 1 if the volume of the room is 1296 metre3. Then find the breadth of the room?

Thrice the square of a natural number decreased by four times the number is equal to 50 more than the number. The number is :

Direction: Study the following graph carefully and answer the questions that follow:
The graph given below represents the number of users of two broadband services A and B across 5 cities P, Q, R, S and T.

What is the total number of users of brand B across all five cities together?

Point A (2, 1) divides segment BC in the ratio 2 : 3. Co-ordinates of B are (1, -3 ) and C are (4 , y). What is the value of y ? 

At 30% discount the selling price of an article is Rs 1050. What is the selling price (in Rs) if the discount is 15%?

A rectangular piece of paper of dimensions 22 cm by 12 cm is rolled along its length to form a cylinder. The volume (in cm³) of the cylinder so formed is