The tickets brought by the Spencer's family
4 adult tickets=

2 children tickets =

So that would add to $35+$13 = $48
Now let's calculate the cost for Andrew family
2 adult ticket =

3 children's ticket =

1 senior ticket =

So this will add to

=$43.5
(c)No. The Spencer family has spent more than the Andrew family
P.S. The part a mentioned here is not actually , yet the total cost of tickets are calculated. Hope this helps