Quantitative Aptitude - Arithmetic Ability Questions

A sum of Rs. 1200 is lent to be paid back in 5 equal annual installments of Rs. 264 each. The rate of interest per annum is

A can finish a work in 7 days . B can finish the same work in 9 days . The days required to finish the work by both of them together.

A can do a work in 21 days and B in 42 days. If they work on it together for 7 days, then what fraction of work is left?

A shopkeeper marks up his wares by 80% and offers 20% discount. What will be the selling price (in Rs) if the cost price is Rs 450?

What is the unit place digit in the expansion of  773?

What is the area (in sq cm) of a rectangle of perimeter 90 cm and breadth 20 cm?

If 3 dupatta is offered free on purchase of 6 dupattas priced Rs 1200 each what is the effective discount on each dupatta?

A shopkeeper, sold cocoa seeds at the rate Rs 1330 a kg and bears a loss of 15%. Now if he decides to sell it at Rs 1463 per kg, what will be the result?