The sum of simple interest on a sum at 8% p.a. for 4 years and 8 years is ₹960. The sum is:

₹800 ₹1100 ₹1000 ₹900

₹1000

Let initial sum = P We know , Simple Interest = \(\frac{Principal ×Rate × Time }{100}\) ATQ, \(\frac{P ×8 × 4 }{100}\) + \(\frac{P ×8 × 8}{100}\) = 960 \(\frac{32P }{100}\) + \(\frac{64P}{100}\) = 960 \(\frac{96P }{100}\) = 960 P = Rs. 1000