Question

A 3/4 of the original amount of radioisotope decays in 60 minutes . what is its half life?

Answer 1

Answer:30 min

Explanation:half life period is the time taken for half of the sample to decay

So half of the sample will decay in 30 min, and half of the remaining, i.e. , a quarter will decay in the next 30 min .

Solved it by applying simple math