O/L Maths 2023 Paper

Annual rates as a percentage of annual assessed value

Answer: Rs 2,880

💡 What it's asking: Rates are a yearly tax worked out as a percentage of the assessed value of the property.

1. 11% of 24 000 is 240.
2. 212% is 12 × 240 = 2880.
3. 3Annual rates = Rs 2880.

✅ 10% would be 2400, so 12% should be a bit more: 2880 fits.

Exterior angle of a triangle equals the two interior opposite angles

Answer: x = 40

💡 What it's asking: The outside angle at B equals the two far-away inside angles added together.

1. 1The far inside angles are x (at C) and 2x (at A).
2. 2x + 2x = 120°, so 3x = 120°.
3. 3x = 40.

✅ Angles 40°, 80° and 60° (= 180° − 120°) add to 180°.

Least common multiple of three algebraic terms

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Converting a logarithm to index form

Dividing algebraic fractions

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