The ratio on a key board of number keys to letter keys is 3:15. If a manufacturer produced 156 letter keys,then how many keys would need to be produced?

Respuesta :

Answer: Approximately 31 number keys.

Step-by-step explanation: Ratio is a comparison between two values.

Ratio for number keys to letter keys is [tex]\frac{3}{15}[/tex], which means each 3 group of number keys is equivalent to 15 letter keys.

The producer will need

[tex]\frac{3}{15} =\frac{x}{156}[/tex]

[tex]x=\frac{3.156}{15}[/tex]

x = 31

The manufacturer will need to be produced 31 keys.

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