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Question Number 71946 by oyemi kemewari last updated on 22/Oct/19

Answered by MJS last updated on 23/Oct/19

$$12=3y{\left(\frac{3y}{3+3y}\right)}^{2/3}{\left(\frac{1}{400}\right)}^{1/2}$$$$80=y{\left(\frac{y}{y+1}\right)}^{2/3}$$$$512000=y^3\frac{y^2}{{(y+1)}^2}$$$$y^5-512000y^2-1024000y-512000=0$$$$\Rightarrow y\approx 80.6599$$

Commented by oyemi kemewari last updated on 25/Oct/19

thanks sir

Commented by oyemi kemewari last updated on 25/Oct/19

but how did you get y from line 4

Commented by MJS last updated on 26/Oct/19

$$\mathrm{we}\mathrm{can}\mathrm{only}\mathrm{approximate}$$

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