Answer :
I'm pretty sure that the answer would be 7.50 because if you do ($18.99+$29.50)x2, you would get $7.50.
$29.50 + $18.99= 48.49
That would be the pants and shirt.
Then do 55.99 - 48.49.
That would bring you to a grand total of $7.50
So, the jacket would be 7.50 more than the pants and shirt combined.
Hope this helps.
Sincerely, HodctIlana