3(2p+4R) when p=0.8 and r = 1.5
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Answer:
This can be done very easily using the AM - GM Inequality
15
3
3×2p
+
5
5×3q
+
7
7×4r
≥
(
3
2p
)
3
(
5
3q
)
5
(
7
4r
)
7
→p
3
q
5
r
7
≤
2
17
.9
5
5
7
7
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