The compound interest earned in two years at 12% per annum Rs 10176. What is the sum (in Rs) invested? 

Let p, q and r be the fraction such that p<q<r. If r is divided by p, the result is 5/2, which exceeds q by 7/4. If $$p+q+r=1{11\over12} $$ then what is the value of (r-p)?

Find the coordinates of the midpoint of the line joining the points (10,12) and (0,8).

In an office, 40 % of the staff is female. 70 % of the female staff and 50 % of the male staff are married. The percentage of the unmarried staff in the office is 

In a class of 66 students there are 33 girls. The average weight of these girls is 61 Kg and average weight of the full class is 66 kgs. What is the average weight of the boys of the class?

A shopkeeper allows 23 % commission on his advertised price and still makes a profit of 10 %. If he gains Rs.56 on one item, his advertised price of the item, in Rs. is 

The price of wheat is reduced by 4 % How many kilogram of wheat can now be bought for the money which was sufficient to buy 48 kg of wheat earlier?

A and B together can complete a particular task in 6 days. If A alone can complete the same task in 10 days, how many days will B take tocomplete the task if he works alone?