A sum of money at simple interest amounts to Rs. 1717 in 1 year and to Rs. 1734 in 2 years. The sum is: Choose the correct choice from the following choices
A) rs . 1200
B) rs . 1690
C) rs . 1600
D) rs . 1700
E) rs . 1500

Rationale: "s . i . for 1 year = rs . ( 1734 - 1717 ) = rs . 17 . principal = rs . ( 1717 - 17 ) = rs . 1700 . answer : option d"
Answer: D