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0580/33 May/Jun 2021, Question 1: Earnings and Deductions

Cambridge IGCSE Mathematics 0580 · Paper 33 (Core) · Calculator · 14 marks

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The question, in short

Using the shop's weekly opening times and several purchase and pay scenarios, work out total opening hours, total cost, change, weekly pay and a selling price.

Summarised in our own words. Use the official paper for the exact wording and any diagrams.

Part (a) · 3 marks

Work out the total number of hours the shop is open across the whole week from the table.

  1. 1Tuesday to Friday: 4.5 + 3.5 = 8 h each, so 4 × 8 = 32 h
  2. 2Saturday: 5 + 5 = 10 h
  3. 3Total = 32 + 10 = 42 hours

Answer42

Part (b) · 3 marks

Calculate the total cost of 2 ovens at $440, 4 grills at $184 and 3 fridges at $1280.

  1. 12 × 440 = 880, 4 × 184 = 736, 3 × 1280 = 3840
  2. 2Total = 880 + 736 + 3840 = $5456

Answer5456

Part (c) · 2 marks

Work out the change from $10 after buying 3 batteries at $2.85 each.

  1. 13 × 2.85 = 8.55
  2. 2Change = 10 − 8.55 = $1.45

Answer1.45

Part (d) · 4 marks

Calculate pay for a 37-hour week at $8.48 per hour, with hours over 32 paid at 1.25 times the rate.

  1. 1Pay for 32 h = 32 × 8.48 = 271.36
  2. 2Overtime rate = 8.48 × 1.25 = 10.60
  3. 3Overtime pay = (37 − 32) × 10.60 = 53.00
  4. 4Total = 271.36 + 53.00 = $324.36

Answer324.36

Part (e) · 2 marks

Calculate the selling price of a toaster bought for $36 when sold at a 40% profit.

  1. 1Profit = 40% of 36 = 0.4 × 36 = $14.40
  2. 2Selling price = 36 + 14.40 = $50.40

Answer50.40

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Also searched as: 0580/33/M/J/21 · 0580_s21_qp_33 · 0580 s21 33 · question 1.
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