Quantitative Aptitude - Arithmetic Ability Questions

The average salary of male employees in a firm was Rs. 5200 and that of females was Rs. 4200. The mean salary of all the employees was Rs. 5000. What is the % of female employees?

What is the value of 1/√2 Cot 30° + 1/√3 Cosec 60°?

If tan2A - tan2B = x, then the value of x is

The point Q(a,b) is first reflected in y­axis to Q1 and Q1 is reflected in x­axis to (­6,2). The co­ordinates of point Q are

Car B is running twice as fast as car A. If car A covers a distance of 90 km in 1 1/2 hrs, what is the speed of car B?

Mehdi can complete a work in 25 hours. If he is joined by Jahnavi who is 50% more efficient, in what time will they together finish the work?

To travel 648 km, an Express train takes 12 hours more than Rajdhani. If however, the speed of the Express train is doubled, it takes 6 hours less than Rajdhani. The speed of Rajdhani is _____.

If x2+ y2+ z2= xy + yz + zx, then what is the value of (7x + 3y – 5z)/5x?