0580/12 May/Jun 2022, Question 12: Constructing Equations
Cambridge IGCSE Mathematics 0580 · Paper 12 (Core) · Calculator · 3 marks
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The question, in short
Express the price of a single flour bag when n bags cost $d, and express the change from $20 after buying x rice bags at $r each and y almond bags at $a each.
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Part (a) · 1 mark
Give an expression for the price of one bag, given that n bags together cost $d.
- 1Cost of one bag = d ÷ n = d/n
Answerd/n
Part (b) · 2 marks
Give an expression for the money left from $20 after paying for x bags at $r and y bags at $a.
- 1Cost = rx + ay
- 2Change = 20 − rx − ay
Answer20 − rx − ay
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Also searched as: 0580/12/M/J/22 · 0580_s22_qp_12 · 0580 s22 12 · question 12.
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