Douglas said he can find 240÷10 by taking the 0 off 240 to get 24. douglas finds 59.20÷10 using the same method and gets 59.2. use the drop-down menus to complete the statement about why douglas is correct or incorrect.

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

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