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Answer:
[tex]y = 15[/tex]
Step-by-step explanation:
Given
[tex]4 : 8 = y : 30[/tex]
Required
Find y
[tex]4 : 8 = y : 30[/tex]
Express as fraction
[tex]4 / 8 = y /30[/tex]
Multiply through by 30
[tex]30 * 4 / 8 = y /30* 30[/tex]
[tex]30 * 4 / 8 = y[/tex]
[tex]15 = y[/tex]
[tex]y = 15[/tex]