TimotheusZ723059 TimotheusZ723059

26-10-2022
Mathematics

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The average of 5 numbers is 12. The average ofthree of those numbers is 10. What is the average ofthe remaining two numbers?

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LordinaA487006 LordinaA487006

26-10-2022

[tex]10=\frac{x+y+z}{3}[/tex][tex]30=x+y+z[/tex][tex]12=\frac{(x+y+z)+a+b}{5}[/tex][tex]12\cdot5=30+a+b[/tex][tex]60=30+a+b[/tex][tex]30=a+b[/tex][tex]15=\frac{a+b}{2}[/tex]

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