Quantitative Aptitude - Arithmetic Ability Questions

The marked price of an article is Rs 960 and it is sold at a discount of Rs 192. What is the discount percentage?

A can do a work in 15 days and B in 20 days. If they work on it together for 5 days, then what fraction of work is left?

The average of 100 items was found to be 30 . If at the time of calculation , two items were wrongly taken as 32 and 12 instead of 23 and 11 , then the correct average is

In the given figure, PQRS is a square of side 20 cm and SR is extended to point T. If the length of QTis 25 cm, then what is the distance (in cm) between the centers O1 and O2 of the two circles?

ΔXYZ is right angled at Y. If m∠Z = 60°, then Cosec X =

If a--b = 4 and ab = 45, find the value of a3 - b3

A, B and C are three points on a circle with centre O. The tangent at C meets BA produced at T. If ∠ATC = 30° and ∠ACT = 48°,then what is the value of ∠AOB ?

A starts a cement trading business by investing Rs 5 lakhs. After 2 months, B joins the business by investing Rs 10 lakhs and then 4 months after B joined C too joins them by investing Rs 20 lakhs. 1 year after A started the business they make Rs 3,50,000 in profit. What is B's share of the profit (in Rs)?