A, B and three men can finish a work in 10, 20 and 15 days respectively, then in how many days will all three together finish the work?

A single discount equivalent to two successive discounts of $$ {12{1\over 2}}{\%}$$ and 20% is

The value of $$ {\sqrt{x^{2}y}\over{\sqrt{xy^{2}}}}×\sqrt{y\over{x}}$$ is

O is the orthocentre of ΔABC. If ∠BOC=110°, ∠BAC is equal to

 A retailer purchase 40 pens at the cost price of 36 pens from a wholeseller . If he sells all of them at a discount of 1 %, then what is his profit percent? 

Directions: Study the following pie chart carefully and answer the questions given beside.
The following pie chart gives the information about breakup of six different categories of workers in a company.

If total 1800 workers are working in the company then find the absolute difference between the number of workers in category D and category C?

₹ 500 was invested at 12 % per annum simple interest and another certain sum of money invested at 10 % per annum simple interest . If the total interest on both the sum after 4 years is 480, the latter sum of money is

P can do a task in 30 days, Q is 50% more efficient than P, R can do the same work in 10 days less than Q if R and Q start task together and after X days they left the task and P completed the remaining task in (X + 8) days. then find the value of X?