Quantitative Aptitude - Arithmetic Ability Questions

A can do a work in 16 days and B in 20 days. If they work on it together for 8 days, then what fraction of work is left?

There were 24 studentsina class. One of them, who was 18 years old, left the class and his place was filled up by a new comer.Ifthe average of the class was thereby lowered by 1 month, the age of new comer is-

The difference between the place values of 9 and 5 in the number 428693745 is

In an acute-angled triangle ABC is Sin(B+A+C)=32 and tan(C+A-B)=1, then C is equal to

The sum of a fraction and 3 times its reciprocal is 37/10. What is the fraction?

If 14.35 - (1.956 - x ) - 83.92 = 3.858 then what is the value of x?

Expand and simplify (x + 4)2 + (x -­ 2)2

If sin ­-330° = x, then the value of x is