A source contain two phosporous radio nuclides _15P^32, T_(1/2)- 14.3 days and _15P^33, T(1/2) = 25.3 days. Initially, 10% of the decay come from _15^33P. How long one must wait until 90% do so ?

A source contain two phosporous radio nuclides _15P^32, T_(1/2)- 14.3

1.	A source contain two phosporous radio nuclides _15P^32, T_(1/2)- 14.3 days and _15P^33, T(1/2) = 25.3 days. Initially, 10% of the decay come from _15^33P. How long one must wait until 90% do so ?
Answer» 250 DAYS 295 days 305 days 208 days ANSWER :D

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A source contain two phosporous radio nuclides _15P^32, T_(1/2)- 14.3 days and _15P^33, T(1/2) = 25.3 days. Initially, 10% of the decay come from _15^33P. How long one must wait until 90% do so ?

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