The compound interest earned by Sunil on a certain amount at the end of two years at the rate of6% p.a. was Rs.370.80. Find the total amount that Sunil got back at the end of two years in the form of principal plus interest earned. Choose the correct choice from the following answers:
A) rs . 3360.80
B) rs . 3370.80
C) rs . 3320.70
D) rs . 3230.80
E) rs . 3130.80

Rationale: let the sum be rs . p p { [ 1 + 6 / 100 ] 2 - 1 } = 370.80 p ( 6 / 100 ) ( 2 + 6 / 100 ) = 370.80 [ a 2 - b 2 = ( a - b ) ( a + b ) ] p = 246 / ( 0.05 ) ( 2.05 ) = 3000 . amount = rs . 3370.80 . answer : b
Answer: B