Form 4 Mathematics
Mwanjoki flying company operates a flying service. It has two types of aeroplanes. The smaller one uses 180 litres of fuel per hour while the bigger one uses 300 litres per hour.
The fuel available per week is 18,000 litres. The company is allowed 80 flying hours per week while the smaller aeroplane must be flown for y hours per week.
(a) Write down all the inequalities representing the above information
(b) On the grid provided on page 21, draw all the inequalities in a) above by shading the unwanted regions
(c) The profits on the smaller aeroplane is Kshs 4000 per hour while that on the bigger one is Kshs 6000 per hour
Use the graph drawn in (b) above to determine the maximum profit that the company made per week.
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