Puzzle Discussion Place

[Rndm_Perfection]

Originally Posted by Neo

Billy is standing behind Rebecca and at the same time Rebecca is standing behind Billy. How is this possible?

They're standing back to back. Simple enough, no?

Originally Posted by Neo

A man decides to buy a zombie. He pays $60 for it, and he is very content with the flesh-eating undead. After a year, the value of the zombie has increased to $70 and he decides to sell the zombie. But already a few days later he regrets his decision to sell the blood-thirsty zombie, and he buys it again. Unfortunately he has to pay $80 to get it back, so he loses $10. After another year of owning the zombie, he finally decides to sell the zombie for $90. How much total profit does the man make?

Lessee... -60 +70 -80 +90 = -140 +160 = +20

The man gains $20 profit. Simple enough.

Originally Posted by Neo

The T-Virus is released in Raccoon City. The virus doubles in concentration every minute. After exactly 20 minutes the entire city will be covered in the virus. After how many minutes will half of the city be covered by the virus?

Doubles every minute... twenty minutes is max.

Let's work backward from 20... But sub in a number for X. For example, 8000 is the high number.

8000, 4000...

At 19 minutes in, half of the city is covered. Simple enough.




All who agree say "I". And if the leader wants to, we can get the answers posted tonight to scare the competition.