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Two reacants A and B are present such th...

Two reacants `A` and `B` are present such that `[A_(0)] = 4[B_(0)]` and `t_(1//2)` of `A` and `B` are `5` and `15` mintute respectively. If both decay folliwing `I` order, how much time later will concentrations of both of them would be equal?

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The correct Answer is:
`15` minute
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