Final answer:
To find the percent of decrease, divide the difference between the original and new wage by the original wage, and multiply by 100. The correct option is B)
Step-by-step explanation:
To find the percent of decrease, we need to calculate the difference between the original and new hourly wage and then express that difference as a percentage of the original wage. In this case, the man's original wage is $15 per hour, and he receives a demotion of $1 per hour. The difference between the original and new wage is $15 - $1 = $14. To express this as a percentage, we divide the difference by the original wage and multiply by 100: ($14/$15) * 100 = 93.33%. Rounded to the nearest tenth, the percent of decrease is 6.7%.