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Find two positive numbers x and y such t...

Find two positive numbers x and y such that `x+y=60\ a n d\ x^3y` is maximum.

A

25 and 35

B

30 and 30

C

40 and 20

D

45 and 15

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The correct Answer is:
D
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DISHA PUBLICATION-APPLICATION OF DERIVATIVES -EXERCISE - 1
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