Question

The fraction of a radioactive material which remains
active after time t is 9/16 . The fraction which
remains active after t/2
will be??
​

Answer 1

Answer:

t/2 is the last fraction so it is the right answer

Answer 2

Answer:

if 1=5 , 2=10 , 3=15 ,4=20 , 5 = ??

that 5 = 25