Rajshahi Krishi Unnayan Bank
Senior Officer written math 2016
1. A person invested 2/3 rd of his capital at 3%, 1/6 th at 6% and the remainder at 12%. Find out the amount of capital if his annual income is TK. 25.
2. A tank is filled in 5 hours by three pipes A, B and C. The pipe C is twice as fast as B and B is twice as fast as A. How much time will pipe A alone take to fill the tank?
3. 10 years ago the ratio of ages of father and son was 4:1. After 10 years the ratio of the father and son will be 2:1. Find the present age of father and son.
4. Two men and three boys can do a piece of work in ten days while three men and two boys can do the same work in 8 days. In how many days can two men and one boy do the work?