If 8% of x is the t same as 4 % of y, then 20% of x is the same as:

A can finish a piece work in 18 days and B can do the same work in half of the time taken by A. Then working together what part of the same work they can finish a day?

The ratio of Ram, Shyam, and Mohan's Working speed is 2: 3: 5 if they get Rs 40,000 for some work. Then find the share of Shyam(in Rupees)?

The line passing through the point (-2,5) and  (6,b) is perpendicular to the line 20x + 5y = 3. Find b?

Product of digits of a 2-digit number is 27. If we add  54 to the number, the new number obtained is a number formed by interchange of the digits. Find the number.

An exterior angle of a regular polygon is 72^o. The sum of all the interior angles is -

If 72 men can build a wall of 280 m length in 21 days, how many men could take 18 days to build a similar type of wall of length 100 m? 

There are three containers of equal capacity. The ratio of Sulphuric acid to water in the first container is 3 : 2, that in the second container is 7 : 3 and in the third container it is 11 : 4 . If all the liquids are mixed together, then the ratio of Sulphuric acid to water in the mixture will be: