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Exam-Style Questions on Linear Programming

Problems on Linear Programming adapted from questions set in previous Mathematics exams.

1.

IGCSE Extended

A large car park has an area of 1400m2 with space for \(x\) cars and \(y\) vans. Each car requires 14m2 of space and each van requires 35m2 of space.

(a) Show that \(2x+5y \le 200\)

(b) There must also be space for

(i) at least 50 vehicles,
(ii) at least 20 vans.

Write down two more inequalities to show this information.

(c) On the grid, show the three inequalities by drawing the three lines and shading the unwanted regions.

Graph Paper

(d) Use your graph to find the largest possible number of vans.

(e) The company charges £6 for parking each car and £10 for parking each van. Find the number of cars and the number of vans which give the owners of the car park the greatest possible income and calculate this income.


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