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Sagot :
x - weight of six people
y - weight of 7th person
[tex]\frac{x}{6}=145\\ \frac{x+y}{7}=147\\\\ x=870\\ x+y=1029\\\\ 870+y=1029\\ y=159\ lb\Rightarrow B[/tex]
y - weight of 7th person
[tex]\frac{x}{6}=145\\ \frac{x+y}{7}=147\\\\ x=870\\ x+y=1029\\\\ 870+y=1029\\ y=159\ lb\Rightarrow B[/tex]
Weight :
⇒ x for 6 people
⇒ y for the 7th person
[tex]x/6=145 \\ (x+y)/6=147 \\ \\ x=145*6 \\ x=870 \\ \\ x+y=1029 \\ \\ 870+y=1029 \\ y=1029-870 \\ y=159[/tex]
The correct answer is B).
⇒ x for 6 people
⇒ y for the 7th person
[tex]x/6=145 \\ (x+y)/6=147 \\ \\ x=145*6 \\ x=870 \\ \\ x+y=1029 \\ \\ 870+y=1029 \\ y=1029-870 \\ y=159[/tex]
The correct answer is B).
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