Answer:
43.5 %
Step-by-step explanation:
50 days is 1 half life. And ten days is 0.2 half lives.
So the total half life is 1.2. To find the division factor you put the half life as a power of 2. So it is [tex]2^{1.2}[/tex] = 2.29739671
Then you divide 100% by that number which gives you 43.52752816
