If x , y, and z are real numbers such that (x - 3)2 + (y - 4)2 + (z - 5)2 = 0 then (x+y+z) is equal to

The sum of money that will yield Rs. 60 as simple interest at 6% per annum in 5 years is

The distance between two places A and B is 60 km. Two cars start at the same time from A and B, travelling at a speed of 35km/h and 25km/h, respectively. If the cars run in the same direction, then they will meet after ( in hours)

A number is decreased by 10% and the resulting number is again decreased by 20%. What is the final percentage of decrease?

If the cost price of 25 pens is equal to the selling price of 20 pens, then the profit percent is

A mixture contains spirit and water in the ratio of 3 : 2. If it contains 3 litres more spirit than water, the quantity of spirit in the mixture is

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

A can do a piece of work in 9 days while B can do it in 12 days. A and B together can do the work in