Quantitative Aptitude - Arithmetic Ability Questions

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

The length of a string is 8 feet and 9 inches, which is divided into 3 equal parts. What is the length of each part in inches?

Find the odd one out.

There are total 200 students in a school, of which 1/5th are boys. Find the number of girls in the school.

If sin3A = x, then value of x is

What is the average of first 30 multiples of 9?

In a mixture of milk and water, there is 19% milk. If the quantity of milk in the mixture is 437 mililitres, then what is the total quantity (in millilitres) of mixture?