900 people attended the school concert. There were twice as many adults as children in the audience. How many children attended the concert? Which let statement would you use?

Question

900 people attended the school concert. There were twice as many adults as children in the audience. How many children attended the concert?   Which let statement would you use?

lgbasallote · Answer

let x = adult
y = children

x + y = 900
x = 2y

use substitution to find y

parthkohli · Answer

$\Large \color{MidnightBlue}{\Rightarrow 2x + x  =900 }$

x is the number of children. Then 2 times the children adults would be there. Agree?

parthkohli · Answer

$\Large \color{MidnightBlue}{\Rightarrow 3x = 900 }$
$\Large \color{MidnightBlue}{\Rightarrow x = {900 \over 3} = ? }$

x = children = ?
2x = adults = 2*?

lgbasallote · Answer

did you get $\small \textit{my}$   explanation @judithh