Question

If the half-life of that substance is 22 days, and only 1/4 of it remains, how many days have elapsed?

A- 11 days
B-22 days
C-44 days
D-88 days

Answer 1

the answer is A (11 days)

Explanation:

Hope this helps you!

Answer 2

11

Explanation:

if half of it is 22, then a whole life is 44 days. 1/4 of 44 days is 11 days so its A