A small group of employees in a company get viruses on their computers. Every hour, each computer infects one other computer. If it takes 8 hours for 100 computers to be infected, how long would it take for only 50 computers to be infected?

Answer 1

A pen and notebook together cost $1.20. If the notebook costs $1.00 more than the pen, how much does the pen cost?

Answer 2

The pen must cost $0.20

Answer 3

$0.10