Quantitative Aptitude - Arithmetic Ability Questions

The third proportional of two numbers 12 and 48 is

Rs. 3105 is due to be divided among K, L and M in the proportion of 2/3 : 3/4 : 1/2 respectively. How much will L get?

The perimeter and the breadth of a rectangle are 60 cm and 14 cm respectively. Find its area (in cm²)

The measures of the four angles of a quadilateral are in the ratio 3:4:5:6. What is the measure of the biggest angle?

If xy+yz+zx = 1, then the value of (1+y2)(x+y)(y+z) ?

If a + b = 1 and ab = -6, then what is the value of a3+ b3?

What is the reflection of the point (3,-5) in the origin?

Simplify 437bxaz / 23ab.