A sum of money rises four times itself at 15% per annum over a certain time. Find the number of years

The cost of four Tamil books and 3 English Dictionary books is INR 750. The cost of a English Dictionary is 2 times of the cost of a Tamil book. What is the total cost of a Tamil book and a English Dictionary 

33 1/3% of 50% of 300 is

20 women can do a work in 16 days. 16 men can do the same work in 15 days what is the ratio between the capacity of the men and the women

X can do a piece of work in 18 days and Y can do it 24 days. How much Y get if they finish the work and earn Rs. 42,000

The Area of rectangular field is 836 sq.m. One side of the rectangle is 22 m. What is the perimeter of the field