Let the principal = ₹ 8x and the amount = ₹ 9x.
∴ Interest = ₹ 9x – ₹ 8x
Rate = \frac{\text { Interest } × 100}{\text { Principal } × \text { Time }}
= \frac{x × 100}{8 × 1}=\frac{25}{2}
∴ Rate = 12 \frac{1}{2}%
Let the principal = ₹ 8x and the amount = ₹ 9x.
∴ Interest = ₹ 9x – ₹ 8x
Rate = \frac{\text { Interest } × 100}{\text { Principal } × \text { Time }}
= \frac{x × 100}{8 × 1}=\frac{25}{2}
∴ Rate = 12 \frac{1}{2}%
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