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## Sagot :

Pounds (weight) will be defined as w.

So we can say that:

c<3000w

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Piano will be defined as 900w.

Number of crates of electronics will be defined as n300w, as we don't know how many crates there are.

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So, with this information we can say that:

[tex]900w+n300w<3000w[/tex]

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Now let's find out how many crates (n) can go on that elevator with the piano...

[tex]900w+n300w<3000w\\ \\ n300w<3000w-900w\\ \\ n300w<2100w[/tex]

[tex]\\ \\ \frac { 1 }{ 300w } \cdot n300w<2100w\cdot \frac { 1 }{ 300w } \\ \\ n<\frac { 2100 }{ 300 } \cdot \frac { w }{ w } \\ \\ n<7[/tex]

The elevator won't be able to accommodate a piano and 7 crates of electronics but it will be able to accommodate a

**.**

*piano and 6 crates of electronics*