Multiple choice What sum will amount to Rs 6,600 in 4 years at 8% per annum at simple interest? Rs 6,000 Rs 5,000 Rs 4,000 Rs 6,200 Reveal answer Fill a bubble to check yourself B Correct answer Explanation Amount = P + SI = P + (P * R * T) / 100 = P(1 + (8 * 4) / 100) = P(1 + 0.32) = 1.32P. 1.32P = 6600. P = 6600 / 1.32 = 5000.