Well, there are 60 minutes in 1 hour, and there are 60 seconds in 1 minute, so in 60 minutes, there are 60 * 60 seconds, or 3600 seconds in 60 minutes, or 1 hour, therefore, in 1 hour there are 3600 seconds.
the machine makes 7 aliens in 2 seconds, how many will it make in 3600 seconds?
In order to figure out what number 1500 is 5% of, take 1500 and divide it by 5% (0.05). The answer is the salesman would have to sell $30,000 to make $1500 in commission.