Quantitative Aptitude - Arithmetic Ability Questions

A person while buying a dress on sale spends Rs. 45 and saves Rs. 5, what is the percentage of his savings?

At what percentage above the cost price must an article be marked so as to gain 33% after allowing a customer a discount of 5%?

ΔXYZ is similar to ΔPQR. If ratio of perimeters of ΔXYZ : ΔPQR is 3:2 and if PQ = 6 cm then what is the length of XY (in cm)?

A solid sphere of radius 3 cm is melted to form a hollow right circular cylindrical tube of length 4 cm and external radius 5 cm. The thickness of the tube is

If (6x ­- 5) = (4x + 7), then the numerical value of (x + 1)3  is

If tan π/3c + cosec π/6c = x, then x is

Three electronic devices make a beep after every 48 sec, 72 sec and 108 sec respectively. They beeped together at 10 a.m. The time when they will next make a beep together at the earliest is

Manjeet can do a work in 18 hours. If he is joined by Jaya who is 100% more efficient, in what time will they together finish the work?