S.I = PRT100\frac{PRT}{100}100PRT
⇒\Rightarrow⇒ N 4890 = 8550×3×x100\frac{8550 \times 3 \times x}{100}1008550×3×x
x=4890×1008550×3x = \frac{4890 \times 100}{8550 \times 3}x=8550×34890×100
x=19.06%x = 19.06\%x=19.06%
x≈19%x \approx 19\%x≈19%
