Quantitative Aptitude - Arithmetic Ability Questions

What is the reflection of the point (6, -3) in the line y = 2?

After excluding stoppages, the speed of a bus is 60 kmph and after including stoppages, it is 45 kmph. For how many minutes does the bus stop per hour?

If (x - 13)2 + (y - 4)2 = 0, then the value of y + xy - x ?

In a Δ ABC, DE || BC. D and E lie on AB and AC respectively. If AB = 7 cm and BD = 3cm, then find BC:DE

ABCD is a quadrilateral with AB = 9 cm, BC = 40 cm, CD = 28 cm, DA = 15 cm and angle ABC is a right –angel. 
What is the area of triangle ADC?

If PQ and PR be the two tangents to a circle with centre O such that ∠QPR = 120° then ∠POQ is

If the difference between the measures of the two smaller angles of a right angled triangle is 8°, then the smallest angle is

A solid cone of height 36 cm and radius of base 9 cm is melted to form a solid cylinder of radius 9 cm and height 9 cm. What percent of material is wasted this process?