If a I-order reaction is completed to the extent of \( 60 \% \) and \( 20 \% \) in time interval...

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If a I-order reaction is completed to the extent of \( 60 \% \) and \( 20 \% \) in time intervals, \( t_{1} \) and \( \mathrm{t}_{2} \), what is the ratio of \( \mathrm{t}_{1}: \mathrm{t}_{2} \) ?
(1) 6.32
(2) 5.58
(3) 4.11
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