Quantitative Aptitude - Arithmetic Ability Questions

In which of the following quadrilaterals both pairs of opposite sides are parallel?

If 35% are the passing marks. A student gets 200 marks yet fails by 24 marks. What is the maximum marks?

At what rate of compound interest per annum will a sum of Rs 20000 become Rs 23328 in 2 years?

If (1/x) + (1/y) + (1/z) = 0 and x + y + z = 9, then what is the value of x3 + y3 + z3 – 3xyz?

Asif is twice as good as workman as Bashir and together they finish a piece of work in 30 days. In how many days will Asif alone finish the work?

From a point, 40 m apart from the foot of a tower, the angle of elevation of its top is 60°. The height of the tower is

A spherical lead ball of radius 6 cm is melted and small lead balls of radius 3 mm are made. The total number of possible small lead balls is

A retailer marks up his goods by 150% and offers 40% discount. What will be the selling price (in Rs) if the cost price is Rs 800?