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MHT CET202020 Oct 2020Evening ShiftMathematicsDifferential EquationsActual

Bismath has half life of 5 days. If sample originally has a mass of 800 mg . then the mass remaining after 30 days will be

Options

  1. A10 mg .
  2. B10.5 mg .
  3. C12 mg .
  4. D12.5 mg .

Correct answer

D. 12.5 mg .

Step-by-step solution

Original mass =800 mg . Half life =5 days. We have to calculate remaining mass after 30 days. Understand that 30 5=6 . aligned Mass remaining &= ( 1 2 )⁶ 800 &= 800 64 = 100 8 =12.5 aligned

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