Quantitative Aptitude - Arithmetic Ability Questions

The difference between Charles' and Shriya's ages is 6 years. When they married each other 30 years ago, 4 times Charle's age was the same as 5 times the age of Shriya. What is the current sum of their ages?

The diagonals are congruent in a _____.

If the diameter of the two circles is 6 units and 10 units and a centre distance of 8 units. Calculate the number of common tangents that can be drawn to both the circle.

8 x {5 - (-2) x (-3)} = ?

32% of a number is 80. What is the number?

What is the slope of the line perpendicular to the line passing through the points (­6,3) and (2,7)?

An angle is 1/3 its supplementary angle. Find the measure of the angle?

Find the smallest of the following decimals.