Radioactive material decays by simultaneous emission of two particles – McqOptions

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1.	Radioactive material decays by simultaneous emission of two particles with respective half-lives 1620 and 810 years. The time, in years, after which one-fourth of the material remains?
A.	1080
B.	2430
C.	3240
D.	4860
Answer» B. 2430

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Radioactive material decays by simultaneous emission of two particles with respective half-lives 1620 and 810 years. The time, in years, after which one-fourth of the material remains?