How much simple interest will be received in 10 years on the amount of Rs. 1600? If the rate of interest is 7.25 percent per annum.

The vertices of the 1 cm side are cut from each corner of a square with a side of 4.5 cm. Find the circumference and area of the octagon formed?

Vivek and Raja had some books whose ratio was 7: 9 and similarly the ratio of books of Abhishek and Raja was 7: 15, then tell us what was the ratio of books of Vivek and Abhishek?

A and B together can complete a work in 35 days. If A works alone and completes 4/7 of that work and leaves the remaining work for B, thus if it takes 114 days to complete the work. So how many days will A, who is more proficient in both, take to complete all the work alone?

Neetu is 11 years younger than Bharti. Fifteen years later Bharti Neetu's age will be 1.2 times. What is Neetu's present age?

If $$ {0.7\over 1-6c}=-0.2$$ then what is the value of c.

At the rate of 8 % simple annual interest, if an amount becomes Rs. 819 in 3 years and 3 months, then what was the original amount?

Find out the H.C.F of 306, 204 and 136.