Quantitative Aptitude - Arithmetic Ability Questions

The average height of 50 bats is 126 cm. Some bats of average height 120 cm are removed. If the new average height is 130 cm, then how many bats are remaining?

The volume of a right circular cone, whose radius of the base is same as one-third of its altitude, and the volume of a sphere are equal. The ratio of the radius of the cone to the radius of the sphere is :

7 litres mixture of milk and water contains 30% water. 3.5 litres of milk is added to this mixture. What is the percentage of water in the new mixture?

When a number x is divided by a divisor it is seen that the divisor = 4 times the quotient = double the remainder. If the remainder is 80 then the value of x is

Two students appeared for an examination. One of them secured 22 marks more than the other and his marks were 55% of the sum of their marks. The marks obtained by them are _______.

What is the equation of the line whose y­-intercept is 4 and making an angle of 45° with the positive x-­axis?

If cosA/(1 - sinA) = x, then the value of x is

What is the total number of points in the plane of triangle ABC which is equidistant from the vertices of the triangle?