Answer
a) .77 grams
b) .45 grams
Work Step by Step
a) We know that 280 mg is equal to .28 grams. Thus, the difference is:
$$ 1.05 \ grams - .28 \ grams \\ = .77 \ grams $$
b) We know that the daily limit is 1.5 grams. Thus, the amount less that the bacon ranch melt has is:
$$ = 1.5 \ grams - 1.05 \ grams \\ = .45 \ grams$$
