Question 271184
x=Cost for Children
y=Cost for Adults
{{{3x+y=20}}}  Total cost is $20
{{{y=x+2}}}   Adults are children's cost plus $2

{{{3x+(x+2)=20}}}
{{{4x+2=20}}}, {{{4x=18}}}, x=$4.50
Adults= $4.50+$2 = $6.50