Giving two successive discount of 25 % at a article is equal to giving one discount of ___%.

In what time will the simple interest be $$ {2\over5} $$ of the principal at 8% per annum? 

If $$ {y={2x-1\over x+3}}$$ find x when y=1

In a division sum, the divisor is ten times the quotient and five times the remainder. If the remainder is 46, find the dividend.

Which of the following numbers is divisible by 25?

The value of (81)3.6 * (9)2.7/ (81)4.2 * (3) is __

Study the following graph carefully to answer the given questions

A can do a piece of work 10 days more than that of Q. Both of them start the work but A leaves the work 5 days before its completion. Find the time in which work is completed.

If sin²a = cos³a then the value of cot⁶ a – cot²a?