How long does it take 200.0 mCi of a radioactive sample to decay to 20.0 mCi if its half-life is 11.0 s?

Name: How long does it take 200.0 mCi of a radioactive sample to decay to 20.0 mCi if its half-life is 11.0 s?
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The decay of a radioactive sample follows the formula N(t) = N0 * (1/2)^(t/T), where N(t) is the remaining quantity, N0 is the initial quantity, t is the time elapsed, and T is the half-life. Solving for t when N(t) = 20.0 mCi, N0 = 200.0 mCi, and T = 11.0 s, we find t = 36.5 s.

How Long Does It Take 200