Quantitative Aptitude - Arithmetic Ability Questions

A vendor buys bananas at 12 for Rs 50 and sells at 5 for Rs 40. What will be the gain (in %)?

In the following question, select the odd number from the given alternatives.

An equilateral triangle of side 6 cm is inscribed in a circle. Then radius of the circle is

AB and AC are the two tangents to a circle whose radius is 6 cm. If ∠BAC = 60 deg, then what is the value (in cm) of √(AB2 + AC2)?

What is the effective discount on two successive discounts of 20% and 25%?

If a2+b2+c2=83and a+b+c=15 then the value of ab+bc+ca is

The average of a,b,c is 20 and that of b,c,d is 25; if d=30, then the value of a is

In a mixture, ink and water are in the ratio of 8 : 5. If 24 litres of water is added to the mixture, then the new ratio becomes 8 : 11. What is the total quantity (in litres) of water in the new mixture?