What is the equation of the line whose y-intercept is -3/4 and making an angle of 45 ° with the positive x-axis? 

A retailer gets a discount of 40 % on the printed price of an article. The retailer sells it at the printed price. His gain percent is 

If the product of four consecutive natural numbers increased by a natural number p, is a perfect square; then the value of p is: 

Find the sum of 30²+31²+32²+________+80²

The following table shows the number of units of product produced and sold by a company during six years.

Find the ratio of the total number of units sold in 2013 and 2015 to the number of units sold in 2015 and 2016?

A and B can together complete a piece of work in 18 days. B and C can together complete the same work in 24 days and A and C can together complete it in 36 days. In how many days can A. B and C, working together, complete this piece of work?

The difference between simple interest and compound on Rs. 1200 for one year at 10% per annum reckoned half-yearly is:

The average of four consecutive odd numbers is 36. What is the smallest of these numbers?