Question 8 — IGCSE 0580 May/June 2023 Paper 41
Cambridge IGCSE Mathematics 0580, Extended tier, calculator. Topic: Algebra · Inequalities. Worth 12 marks.
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Question text
8 A tailor makes x dresses and y shirts in one week.
In one week
• he makes at least 4 dresses
• he makes no more than 7 shirts
• he makes less than 14 dresses and shirts altogether
2
• the number of shirts he makes is more than of the number of dresses.
3
One of the inequalities that shows this information is x H 4.
(a) Write down the other three inequalities in x and/or y.
.............................. ............................... .............................. [3]
(b)
y
14
13
12
11
10
9
8
7
6
5
4
3
2
1
x
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
On the grid, draw 4 straight lines and shade the unwanted regions to show these inequalities.
Label the region R that satisfies the 4 inequalities. [6]
© UCLES 2023 0580/41/M/J/23
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(c) Use your diagram to find the smallest number of dresses and the smallest number of shirts the
tailor makes in one week.
...................... dresses and ...................... shirts [1]
(d) The profit the tailor makes on one dress is $10 and the profit on one shirt is $6.
Use your diagram to find the largest profit the tailor can make in one week.
$ ................................................ [2]
© UCLES 2023 0580/41/M/J/23 [Turn over
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