If P : Q = 4 : 5 and P : R =2 : 3, then what is 3P : 4Q : 5R?

The following pie chart gives the central angles of the sectors representing the number of cameras sold form a shop from July to November in a certain Year.

what percentage are the sales in July of the total sales from July to November

The sum of the squares of two positive integers is 100 and the difference of their squares is 28. The sum of the numbers is: 

If 738 A6A is divisible by 11, then the value of A is-

The in-radius of an equilateral triangle is of length 3 cm. Then the length of each of its medians is 

The length of diagonal of a square is $${15\sqrt { 2}}$$cm. Its area is

A and B together can complete a piece of work in 3 days. They start together. But, after 2 days, B left the work, if the work is completed after 2 next days. B alone could do the work in

In 80 litres mixture of milk and water the ratio of amount of milk to that of amount of water is 7: 3. In order to make this ratio 2: 1, how many litres of water should be added?