I need this A. S.A..P...A restaurant wants to study how well it salad sell circle graph shows the sales of salad during the past few weeks of five of the salads were sold for Caesar salad how many total salads did the restaurant sell 20% Cesar 25% club 56

step-by-step explanation:

ending amount = beginning amount / (2^n)

where "n" = number of half-lives (or elapsed time / half-life)

ending amount = 50 mg / (2 ^10 / 5.3)

ending amount = 50 mg / (2 ^ 1.8867924528)

ending amount = 50 m / 3.6981210597

ending amount = 13.5203794557 mg

or about 13.5 mg remain

source: