The mass of the first shipment at time t is

The mass of the second shipment at time t is

At time t, the ratio of m₁ to m₂ is

Therefore as a percentage,

Answer: B. 81.2%
What numbers are inside both circles?
The answer is A.
Substitute the values into the inequality:
-1 - 1 > 0
-2 > 0
False
I think the. answer is 511.2