Question

a total of 243 adults and children are at a movie theater. there are 109 more adults then children. How many adults are there? How many children are there?

Answer 1

we can make an equation for this (x is the number of children)
$x + (x + 109) = 243 \\ 2x + 149 = 243 \\ 2x = 243 - 149 = 134$
$x = \frac{134}{2} = 67$

there are 67 children in the theater

67+ 109=176

and there are 176 adults.

good luck