Southern Province Grade 11 Maths Term 2 Test 2025

VAT on an electricity bill and total bill

Answer: i Rs 450 ii Rs 3450

💡 What it's asking: VAT (value added tax) is a percentage added on top of the bill. Find 15% of Rs. 3000, then add it on.

1. 1(i) VAT = 15% of 3000 = 3000 × 15/100.
2. 230 × 15 = Rs. 450.
3. 3(ii) Total bill = 3000 + 450 = Rs. 3450.

✅ 3000 × 1.15 = 3450, the same total in one step.

Two angles from triangle angle sum and exterior angle

Answer: x = 100, y = 30 degrees

💡 What it's asking: Use two facts: angles in a triangle add to 180°, and angles on a straight line add to 180°. Find the missing triangle angle first, then x, then y.

1. 1(i) In triangle ABC: angle ACB = 180 − 55 − 45 = 80°.
2. 2x sits next to it on the straight line BD, so x = 180 − 80 = 100°.
3. 3(ii) At D, the inside angle of triangle ACD = 180 − 130 = 50°.
4. 4In triangle ACD: y = 180 − 100 − 50 = 30°.

✅ Triangle ACD: 100 + 50 + 30 = 180°.

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