Quantitative Aptitude - Arithmetic Ability Questions

The mean of 10 observations is 17. One more observation is included and the new mean becomes 16. The 11th observation is

BE and CF are two altitudes of a triangle ABC. If AB = 6 cm , AC = 5 cm and CF = 4 cm , then the length of BE is

The radius of base of a solid cylinder is 7 cm and its height is 21 cm. It is melted and converted into small bullets. Each bullet is of same size. Each bullet consisted of two parts viz. a cylinder and a hemisphere on one of its base. The total height of bullet is 3.5 cm and radius of base is 2.1 cm. Approximately how many complete bullets can be obtained?

A merchant changed his trade discount from 25% to 15%. This would increase selling price by

What is the value of (cosec30 - 1/√3)?

Given that tan(θ + 15°) = √3. Then the value of θ is?

A dealer allows a discount of 15%. A customer pays an amount of Rs. 318.75 for an article. At what price is the article listed?

The compound interest earned in two years at 12% per annum is Rs 10176. What is the sum (in Rs) invested?