The simple interest on a sum of money is  1/9  of the sum. The number of years is  numerically equal to the rate percent per annum. The rate percent per annum  is :

1) 3 1/3

2) 5

3) 6 2/3

4) 10

A trader marked the selling price of an article at 10% above the cost price. At the time of selling, he allows certain discount and suffers a loss of 1 %. He allowed a discount of

1)  11 %

2)  10%

3)  9%

4)  10.5%

Sudesh crossed a rectangular field diagonally. If the length and breadth of the field was 12 metres and 9 metres respectively, how much distance in metres did Sudesh walk?

1) 21

2)  42

3)  36

(4) None of these