Given details are,
Principal (p) = Rs 1000
Rate (r) = 8%
Time = 1 ½ years = 3/2 × 2 = 3 half years
By using the formula,
A = P (1 + R/100) n
= 1000 (1 + 8/100)3
= 1000 (208/100)3
= Rs 1124.86
∴ Compound Interest = A – P = Rs 1124.86 – Rs 1000 = Rs 124.86