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?

The age of Rakhi is twelve times that of her daughter Anubha. If age of Anubha is 3 years now, then what was the age of Rakhi, 2 years earlier?

What is the value of √121 + √12321 + √1234321 + √123454321?

X does 25% of a work in 20 days. Y joins X and they together finish the remaining work in 15 days. Y alone can do the whole work in ___ days.

Due to increase of k% in the side, the area of a square increases by 69%. What is the value of k?

Find the area (in cm²) of a semi-circle of radius 35 cm.

If 4x + 1x = 5, (x≠0), then the value of 5x4x2+10x+1 is

The solution set of 4x -­ 3y = 10 and 3x + y = 14 is