Answer : 4 Both a and b sufficient Explanation : Answer: D) Both a and b sufficient Explanation: Let the sum be Rs. xa. gives, S.I = Rs. 9000 and time = 9 years.b. gives, Sum S.I for 6 years = 2 x Sum--

**last edited by**

Question :What is the sum which earned interest ?Statements :a. The total simple interest was Rs. 9000 after 9 years.b. The total of sum and simple interest was double of the sum after 6 years.