ashlyn07 ashlyn07

12-04-2015
Mathematics

Answered

Kayla's age is 3 less than twice her brothers age . Kayla is 13 years old. How old is her brother?

(using equations)

Answer :

iloveonedirection iloveonedirection

12-04-2015

[tex]Kayla=k \\ Brother=b \\ \\ k=2b-3 \\ k=13 \\ \\ (13)=2b-3 \\ 16=2b \\ 8=b [/tex]

Her brother is 8 years old.

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cclemeno cclemeno

13-04-2015

Let x= brother
2x-3= Kayla

2x -3= 13
2x-3= 13
2x= 16
x=8
Kayla's brother is 8 yrs. old

Answer Link

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