Solution:
Given that,
Suppose that only 200 sperm out of the original 400 million sperm deposited in the vagina survive the journey to the egg
400 million = 400000000
The percentage is given as:
[tex]Percentage = \frac{ \text{ 200 sperm }} { \text{ original 400 million sperm }} \times 100[/tex]
Therefore,
[tex]Percentage = \frac{ 200 }{ 400000000 } \times 100\\\\Percentage = 0.00005 \%[/tex]
Thus, 0.00005 % sperms deposited in the vagina survive the journey to the egg.