Verified answer

Answer:

320

Step-by-step explanation:

[tex] \frac{80 \times {x}^{2} }{4 \times {y}^{2} } = [/tex]

[tex]80 \times {1600}^{2} [/tex]

[tex]4 \times {400}^{2} [/tex]

[tex]80 \times 2560000[/tex]

[tex]4 \times 160000[/tex]

[tex]80 \times 2560000 = 204,800,000[/tex]

[tex]4 \times 160000 = 640000[/tex]

[tex] \frac{204800000}{640000} = 320[/tex]

Step-by-step explanation:

Given, x=1600

           y=400

So,

[tex]\frac{80*1600*1600}{4x*400*400}\\\\ =\frac{20*1600*1600}{400*400}\\ \\=20*4*4\\=320[/tex]