Quantitative Aptitude - Arithmetic Ability Questions

The average of 8 consecutive integers is 23/2. What is the average of first three integers?

If 5x/2 - [7(6x - 3/2)]/4 = 5/8, then what is the value of x?

Simplify 50 + 18 - 8

X and Y are two alloys which are prepared by mixing zinc and aluminium in the ratio of 1 : 4 and 11 : 8 respectively. If equal quantities of alloys are melted to form a third alloy Z then what is the ratio of zinc and aluminium in alloy Z?

If the simple interest on a sum of money for 2 years at 5% per annum is Rs. 50, the compound interest on the same at the same rate and for the same time is:­

AB is a chord of the circle and its center is “O”. ON is perpendicular to AB. If the length of AB=20 cm, ON-(2√11) cm, find the radius (in cm) of the circle.

The mean of marks secured by 60 students in division A of class X is 64, 40 students of division B is 60 and that of 60 students of division C is 58. Find the mean of marks of the students of three divisions of Class X.

Find 2 consecutive natural numbers, sum of whose squares is 25.