Answer:
Family One:
$8x6= $48
$70-$48= $22
$22 ÷ 2 = $11
48+22= 70
Family Two:
$8x3= 24
$11x4= 44
44+24 =68
Family Two is not $59 so A isn't correct
Family One:
$9x6= $54
$70-$54= $16
$16÷2= 8
$54+$16= $70
Family Two:
$9x3=$27
$8x4= $32
$32+$27 =$59
These numbers match up to the ticket prices- therefore the answer is B. Adults tickets = $9