The probability that Ruby receives junk mail is 11 percent. If she receives 94 pieces of mail in a week, about how many of them can she expect ti be junk mail?
1 Answer
Jan 10, 2017
Ruby can expect to receive about 10 pieces of junk mail in a week.
Explanation:
We can restate this problem as:
What is 11% of 94?
"Percent" or "%" means "out of 100" or "per 100", Therefore 11% can be written as
When dealing with percents the word "of" means "times" or "to multiply".
Finally, lets call the number of pieces of junk mail we are looking for "j".
Putting this altogether we can write this equation and solve for
