Task: Question Answering
Input (English): Problem: the compound interest earned by sunil on a certain amount at the end of two years at the rate of 10 % p. a. was rs. 420. find the total amount that sunil got back at the end of two years in the form of principal plus interest earned.
Options: a. rs. 2530, b. rs. 2430, c. rs. 2420, d. rs. 2410, e. rs. 2440
Output (English): c