Quantitative Aptitude - Arithmetic Ability Questions

What is the value of tanπ4+A×tan3π4+A ?

A merchant changed his trade discount from 25% to 15%. This would increase selling price by

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

50 litre mixture of water and alcohol contains 10% alcohol. How much more alcohol must be added to make the strength of alcohol 40% in the new mixture?

Three numbers are in the ratio 1 : 2 : 3 and the sum of their cubes is 4500 .The smallest numbers is

How long does a train, 75 m long, moving at 60 km/hr take to pass a certain telegraph post?

The mean of 10 observations is 13. Two more observations are included and the new mean becomes 14. The mean of two new observations is

Which of the following is not a quadratic equation?