Sarah should order 10 uniforms for boys and 25 uniforms for girls
Step-by-step explanation:
Let b be the number of boys and
g be the number of girls
Then according to given statements
[tex]b+g = 35\ \ \ \ Eqn1\\g = 2b+5\ \ \ Eqn2[/tex]
Putting g = 2b+5 in equation 1
[tex]b + 2b+5 = 35\\3b +5 = 35\\3b+5-5 = 35-5\\3b = 30[/tex]
Dividing both sides by 3
[tex]\frac{3b}{3} = \frac{30}{3}\\b = 10[/tex]
Putting b=10 in equation 2:
[tex]g = 2b+5\\= 2(10)+5\\=20+5\\=25[/tex]
Hence,
Sarah should order 10 uniforms for boys and 25 uniforms for girls
Keywords: Linear equation, variables
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