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Kenneth is 10 years older than Andrew. Billy is 2 times as old as Andrew. Cameron is 8 years younger than Andrew. The combined age of the four is 77. How old is each boy?​

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ArtisticSin

Answer:

[tex]a=15\\b=30\\c=7\\k=25[/tex]

Step-by-step explanation:

[tex]77=a+k+b+c[/tex]

[tex]b=2a[/tex]

[tex]c=a-8[/tex]

[tex]k=10+a[/tex]

[tex]77= a+2a+(a-8)+(a+10)[/tex]

[tex]77=3a+(2a+2)\\77-2=3a+2a\\75=5a\\[/tex]

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