Find the Difference in Amount and Principal
Answer: (4) Rs.800
Principal = Rs.4000, Rate = 5 % Time = 4 years.
Simple Interest = P x R x T/100
Where, P = principal , R = rate, & T = time.
Then, the difference = 4000 x 5 x 4 /100
= 40 x 20
Then, the difference in amount and principal for Rs. 4000 at the rate of S% annual interest in 4 years is Rs.800.
Hence, the answer is (4) Rs.800.