Quantitative Aptitude - Arithmetic Ability Questions

If the cost price of 25 pens is equal to the selling price of 20 pens, then the profit percent is

S does half as much work as T in 1/7 of the time taken by T. If together they take 21 days to complete a work, then how may days shall S take to complete that work alone?

One of the internal angle of a rhombus is 60° and length of its shorter diagonal is 8 cm. What is the area of the rhombus?

If 2/3(6x/5 - 1/4) + 1/3 = 9x/5, then what is the value of x?

A hemisphere is kept on top of a cube. Its front view is shown in the given figure. The total weight of the figure is 21 cm. The ratio of curved surface area of hemisphere and total surface area of cube is 11 : 42. What is the total volume (in cub.cm) of figure?

A shopkeeper marks his goods 50% more than the cost price and allows a discount of 25%. His profit or loss percentage is:

What is (x-y)3+y-23+z-x33x-yy-zz-x =?

If Cos θ = 15/17 , then what is the value of Cosec θ?