Apps. and Interpretation for IBDP Maths Ebook 1 | Page 40

Your Practice Set – Applications and Interpretation for IBDP Mathematics
4. The average profit P of selling x buckets of fruits can be modelled by
P� � � � .
2
0.25( x 20) 21
(a) Find the average profit of selling 22 buckets of fruits.
A target is set such that the average profit should be at least 17.
(b) Find the range of the number of buckets of fruits.
Due to limitation, the number of buckets of fruits to be sold is at most 18.
[2]
[2]
(c)
Find the maximum average profit for this limitation.
[2]
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