Quantitative Aptitude - Arithmetic Ability Questions

What is the reflection of the point (2, -3.5) in the y-axis?

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

x, y and z are real numbers. If x3 + y3 + z3 = 13, x + y + z = 1 and xyz = 1, then what is the value of xy + yz + zx?

A shopkeeper marks up his wares by 60% and offers 25% discount. What will be the selling price (in Rs) if the cost price is Rs 1600?

The average age of eight teachers in a school is 40 years. A teacher among them died at the age of 55 years whereas another teacher whose age was 39 years joins them. The average age of the teachers in the school now is (in years)

5 litres of honey contains 80% sugar. 3 litres of water is added to this honey. What is the percentage of sugar in the new mixture?

Determine the value of 1r+1s when r3+s3=0 and r+s=6 ?

Determine the value of 'x' when 3x3 = 27