can someone help me im stumped on this problem i need help please. A computer is infected with the Sasser virus. Assume that it infects 20 other computers within 5 minutes; and that these PCs and servers each infect 20 more machines within another five minutes, etc. How long until 100 million computers are infected?

Question

can someone help me im stumped on this problem i need help please. A computer is infected with the Sasser virus.  Assume that it infects 20 other computers within 5 minutes; and that these PCs and servers each infect 20 more machines within another five minutes, etc.  How long until 100 million computers are infected?

anonymous · Answer

100 000 000=1(20)^(t/5)

Solve for t

I think it's 30.74 minutes