Quantitative Aptitude - Arithmetic Ability Questions

A fraction, when taken away from 1/3 gives 1/12. The fraction is

A train is moving with uniform speed crosses two tunnels of lengths 270 metres and 450 metres in 12 seconds and 15 seconds respectively. What is the speed (in km/hr) of the train?

The interest earned on Rs. 3675 at the rate of 4% simple interest per annum for 2 years will be

A mixture contains acid and water in the ratio of 7 : 3. If 4 litres of water is added to it, then the ratio of acid and water becomes 7 : 4. What is the quantity (in litres) of acid in the mixture?

If ABCD is a Cyclic Quadrilateral, then the value of Cos2A - Cos2B - Cos2C + Cos2D is

Dodecahedron has 30 edges. How many vertices does it have?

The cost of one dozen bananas is Rs.5. The cost of one dozen oranges is Rs.75. What will the cost of one and a quarter dozen bananas and three-fourth dozen oranges?

Find out the odd word/letters/number/number pair from the given alternatives.