Quantitative Aptitude - Arithmetic Ability Questions

Find the total surface area (in cm2) of a cube of side 7.5 cm.

x, y and z are prime numbers and x + y + z = 38. What is the maximum value of x?

A solid cylinder has radius of base 14 cm and height 15 cm. 4 identical cylinders are cut from each base as shown in the given figure. Heoght of small cylinder is 5 cm. What is the total surface area of the remaining part?

The mean of marks secured by 55 students in division A of class X is 58, 45 students of division B is 54 and that of 75 students of division C is 52. Find the mean of marks of the students of three divisions of Class X.

A store sells a watch for a profit of 25% of the cost. Then the percentage of profit against selling price is

If xy = 48 and x2 + y2 = 100, then (x + y) is

If 2x-y2+(3y-2z)2=0,then the ratio of x:y:z is

Madhur works 2 times faster than Sagar. If Sagar can complete a job alone in 18 days, then in how many days can they together finish the job?