A sum of money lent out at S.I. amounts to Rs. 710 after 2 years and to Rs. 1020 after a further period of 5 years. The sum is? Choose the correct choice
A) s.440
B) s. 586
C) s. 540
D) s. 740
E) s. 840
S.I for 5 years = (1020 - 710) = Rs. 310.   S.I. for 2 years = 310/5 * 2 = Rs. 124.   Principal = (710 - 124) = Rs. 586.   ANSWER:s. 586
<result>B</result>
A sum of money lent out at S.I. amounts to Rs. 710 after 2 years and to Rs. 1020 after a further period of 5 years. The sum is?