A sum of money lent out at S.I. amounts to Rs. 720 after 2 years and to Rs. 1020 after a further period of 5 years. The sum is? Choose the most appropriate option: A) 299 B) 600 C) 77 D) 266 E) 222
S.I for 5 years = (1020 - 720) = Rs. 300.   S.I. for 2 years = 300/5 * 2 = Rs. 120.   Principal = (720 - 120) = Rs. 600.   Answer: 600
<result>B</result>
A sum of money lent out at S.I. amounts to Rs. 720 after 2 years and to Rs. 1020 after a further period of 5 years. The sum is?